Update to Python 3.9

4 files changed, 280 insertions, 265 deletions

diff --git a/.flake8 b/.flake8
index efc7b3d..9d391f9 100644
--- a/.flake8
+++ b/.flake8
@@ -13,10 +13,10 @@ ignore=
     # Docstring Content
     D400,D401,D402,D404,D405,D406,D407,D408,D409,D410,D411,D412,D413,D414,D416,D417,
     # Type Annotations
-    TYP002,TYP003,TYP101,TYP102,TYP204,TYP206
+    ANN002,ANN003,ANN101,ANN102,ANN204,ANN206
 exclude=
     __pycache__,.cache,
     venv,.venv
-per-file-ignores=tests/*:D1,TYP
+per-file-ignores=tests/*:D1,ANN
 import-order-style=pycharm
 inline-quotes="
diff --git a/Pipfile b/Pipfile
index 1d58f14..8c55df6 100644
--- a/Pipfile
+++ b/Pipfile
@@ -4,47 +4,47 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
-arrow = "~= 0.15"
-attrs = "~= 19.3"
-beautifulsoup4 = "~= 4.8"
+arrow = "~= 0.17"
+attrs = "~= 20.3"
+beautifulsoup4 = "~= 4.9"
 falcon = "~= 2.0.0"
 forbiddenfruit = "~= 0.1"
-fuzzywuzzy = "~= 0.17"
-gunicorn = "~= 19.9"
-jsonschema = "~= 3.0"
-more-itertools = "~= 8.0"
-networkx = "~= 2.4"
-numpy = "~= 1.17"
-pandas = "~= 0.25"
-pendulum = "~= 2.0"
+fuzzywuzzy = "~= 0.18"
+gunicorn = "~= 20.0"
+jsonschema = "~= 3.2"
+lark = "~= 0.10"
+more-itertools = "~= 8.6"
+networkx = "~= 2.5"
+numpy = "~= 1.19"
+pandas = "~= 1.1"
+pendulum = "~= 2.1"
 python-dateutil = "~= 2.8"
 python-levenshtein = "~=0.12.0"
-pyyaml = "~= 5.2"
-scipy = "~= 1.3"
-sentry-sdk = {extras = ["falcon"], version = "~= 0.14.2"}
-sympy = "~= 1.5"
+pyyaml = "~= 5.3"
+scipy = "~= 1.5"
+sentry-sdk = {extras = ["falcon"], version = "~= 0.19.3"}
+sympy = "~= 1.6"
 toml = "~= 0.10"
-yarl = "~= 1.4"
-lark = "~= 0.10"
+yarl = "~= 1.6"
 
 [dev-packages]
-coverage = ">= 4.4.2, == 4.*"
-flake8 = "~= 3.7.8"
-flake8-annotations = ">= 1.1.1, == 1.*"
-flake8-bugbear = "~= 19.3"
-flake8-docstrings = "~=1.4"
+coverage = "~= 5.3"
+flake8 = "~= 3.8.4"
+flake8-annotations = "~= 2.4.1"
+flake8-bugbear = "~= 20.1"
+flake8-docstrings = "~= 1.5"
 flake8-formatter-junit-xml = "~= 0.0.6"
 flake8-import-order = "~= 0.18.1"
-flake8-quotes = "~= 2.1"
-flake8-string-format = "~= 0.2.3"
-flake8-tidy-imports = "~= 2.0"
+flake8-quotes = "~= 3.2"
+flake8-string-format = "~= 0.3.0"
+flake8-tidy-imports = "~= 4.1"
 flake8-todo = "~= 0.7"
-pre-commit = "~= 1.18"
-pydocstyle = "~= 4.0"
-unittest-xml-reporting = ">= 2.5.1, == 2.*"
+pre-commit = "~= 2.8.2"
+pydocstyle = "~= 5.1"
+unittest-xml-reporting = "~= 3.0"
 
 [requires]
-python_version = "3.8"
+python_version = "3.9"
 
 [scripts]
 lint = "flake8"
diff --git a/Pipfile.lock b/Pipfile.lock
index 7d6385a..ff4323a 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,11 +1,11 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "c8e2747a00a8eda52c1a2a784cdb69177761da86c9bba1d9c7c5c2d729074fa1"
+            "sha256": "43d68017476a707dec8891ad40e2328390122567e338dd44686e1f48063d655d"
         },
         "pipfile-spec": 6,
         "requires": {
-            "python_version": "3.8"
+            "python_version": "3.9"
         },
         "sources": [
             {
@@ -26,11 +26,11 @@
         },
         "attrs": {
             "hashes": [
-                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
-                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
+                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
+                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
             ],
             "index": "pypi",
-            "version": "==19.3.0"
+            "version": "==20.3.0"
         },
         "beautifulsoup4": {
             "hashes": [
@@ -43,10 +43,10 @@
         },
         "certifi": {
             "hashes": [
-                "sha256:5930595817496dd21bb8dc35dad090f1c2cd0adfaf21204bf6732ca5d8ee34d3",
-                "sha256:8fc0819f1f30ba15bdb34cceffb9ef04d99f420f68eb75d901e9560b8749fc41"
+                "sha256:1f422849db327d534e3d0c5f02a263458c3955ec0aae4ff09b95f195c59f4edd",
+                "sha256:f05def092c44fbf25834a51509ef6e631dc19765ab8a57b4e7ab85531f0a9cf4"
             ],
-            "version": "==2020.6.20"
+            "version": "==2020.11.8"
         },
         "decorator": {
             "hashes": [
@@ -92,17 +92,18 @@
         },
         "gunicorn": {
             "hashes": [
-                "sha256:c3930fe8de6778ab5ea716cab432ae6335fa9f03b3f2c3e02529214c476f4bcb",
-                "sha256:f9de24e358b841567063629cd0a656b26792a41e23a24d0dcb40224fc3940081"
+                "sha256:1904bb2b8a43658807108d59c3f3d56c2b6121a701161de0ddf9ad140073c626",
+                "sha256:cd4a810dd51bf497552cf3f863b575dabd73d6ad6a91075b65936b151cbf4f9c"
             ],
             "index": "pypi",
-            "version": "==19.10.0"
+            "version": "==20.0.4"
         },
         "idna": {
             "hashes": [
                 "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6",
                 "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.10"
         },
         "jsonschema": {
@@ -123,11 +124,11 @@
         },
         "more-itertools": {
             "hashes": [
-                "sha256:6f83822ae94818eae2612063a5101a7311e68ae8002005b5e05f03fd74a86a20",
-                "sha256:9b30f12df9393f0d28af9210ff8efe48d10c94f73e5daf886f10c4b0b0b4f03c"
+                "sha256:8e1a2a43b2f2727425f2b5839587ae37093f19153dc26c0927d1048ff6557330",
+                "sha256:b3a9005928e5bed54076e6e549c792b306fddfe72b2d1d22dd63d42d5d3899cf"
             ],
             "index": "pypi",
-            "version": "==8.5.0"
+            "version": "==8.6.0"
         },
         "mpmath": {
             "hashes": [
@@ -137,41 +138,46 @@
         },
         "multidict": {
             "hashes": [
-                "sha256:02b2ea2bb1277a970d238c5c783023790ca94d386c657aeeb165259950951cc6",
-                "sha256:0ce1d956ecbf112d49915ebc2f29c03e35fe451fb5e9f491edf9a2f4395ee0af",
-                "sha256:0ffdb4b897b15df798c0a5939a0323ccf703f2bae551dfab4eb1af7fbab38ead",
-                "sha256:11dcf2366da487d5b9de1d4b2055308c7ed9bde1a52973d07a89b42252af9ebe",
-                "sha256:167bd8e6351b57525bbf2d524ca5a133834699a2fcb090aad0c330c6017f3f3e",
-                "sha256:1b324444299c3a49b601b1bf621fc21704e29066f6ac2b7d7e4034a4a18662a1",
-                "sha256:20eaf1c279c543e07c164e4ac02151488829177da06607efa7ccfecd71b21e79",
-                "sha256:2739d1d9237835122b27d88990849ecf41ef670e0fcb876159edd236ca9ef40f",
-                "sha256:28b5913e5b6fef273e5d4230b61f33c8a51c3ce5f44a88582dee6b5ca5c9977b",
-                "sha256:2b0cfc33f53e5c8226f7d7c4e126fa0780f970ef1e96f7c6353da7d01eafe490",
-                "sha256:32f0a904859a6274d7edcbb01752c8ae9c633fb7d1c131771ff5afd32eceee42",
-                "sha256:39713fa2c687e0d0e709ad751a8a709ac051fcdc7f2048f6fd09365dd03c83eb",
-                "sha256:4ef76ce695da72e176f6a51867afb3bf300ce16ba2597824caaef625af5906a9",
-                "sha256:5263359a03368985b5296b7a73363d761a269848081879ba04a6e4bfd0cf4a78",
-                "sha256:52b5b51281d760197ce3db063c166fdb626e01c8e428a325aa37198ce31c9565",
-                "sha256:5dd303b545b62f9d2b14f99fbdb84c109a20e64a57f6a192fe6aebcb6263b59d",
-                "sha256:60af726c19a899ed49bbb276e062f08b80222cb6b9feda44b59a128b5ff52966",
-                "sha256:60b12d14bc122ba2dae1e4460a891b3a96e73d815b4365675f6ec0a1725416a5",
-                "sha256:620c39b1270b68e194023ad471b6a54bdb517bb48515939c9829b56c783504a3",
-                "sha256:62f6e66931fb87e9016e7c1cc806ab4f3e39392fd502362df3cac888078b27cb",
-                "sha256:711289412b78cf41a21457f4c806890466013d62bf4296bd3d71fad73ff8a581",
-                "sha256:7561a804093ea4c879e06b5d3d18a64a0bc21004bade3540a4b31342b528d326",
-                "sha256:786ad04ad954afe9927a1b3049aa58722e182160fe2fcac7ad7f35c93595d4f6",
-                "sha256:79dc3e6e7ce853fb7ed17c134e01fcb0d0c826b33201aa2a910fb27ed75c2eb9",
-                "sha256:84e4943d8725659942e7401bdf31780acde9cfdaf6fe977ff1449fffafcd93a9",
-                "sha256:932964cf57c0e59d1f3fb63ff342440cf8aaa75bf0dbcbad902c084024975380",
-                "sha256:a5eca9ee72b372199c2b76672145e47d3c829889eefa2037b1f3018f54e5f67d",
-                "sha256:aad240c1429e386af38a2d6761032f0bec5177fed7c5f582c835c99fff135b5c",
-                "sha256:bbec545b8f82536bc50afa9abce832176ed250aa22bfff3e20b3463fb90b0b35",
-                "sha256:c339b7d73c0ea5c551025617bb8aa1c00a0111187b6545f48836343e6cfbe6a0",
-                "sha256:c692087913e12b801a759e25a626c3d311f416252dfba2ecdfd254583427949f",
-                "sha256:cda06c99cd6f4a36571bb38e560a6fcfb1f136521e57f612e0bc31957b1cd4bd",
-                "sha256:ec8bc0ab00c76c4260a201eaa58812ea8b1b7fde0ecf5f9c9365a182bd4691ed"
-            ],
-            "version": "==5.0.0"
+                "sha256:060d68ae3e674c913ec41a464916f12c4d7ff17a3a9ebbf37ba7f2c681c2b33e",
+                "sha256:06f39f0ddc308dab4e5fa282d145f90cd38d7ed75390fc83335636909a9ec191",
+                "sha256:17847fede1aafdb7e74e01bb34ab47a1a1ea726e8184c623c45d7e428d2d5d34",
+                "sha256:1cd102057b09223b919f9447c669cf2efabeefb42a42ae6233f25ffd7ee31a79",
+                "sha256:20cc9b2dd31761990abff7d0e63cd14dbfca4ebb52a77afc917b603473951a38",
+                "sha256:2576e30bbec004e863d87216bc34abe24962cc2e964613241a1c01c7681092ab",
+                "sha256:2ab9cad4c5ef5c41e1123ed1f89f555aabefb9391d4e01fd6182de970b7267ed",
+                "sha256:359ea00e1b53ceef282232308da9d9a3f60d645868a97f64df19485c7f9ef628",
+                "sha256:3e61cc244fd30bd9fdfae13bdd0c5ec65da51a86575ff1191255cae677045ffe",
+                "sha256:43c7a87d8c31913311a1ab24b138254a0ee89142983b327a2c2eab7a7d10fea9",
+                "sha256:4a3f19da871befa53b48dd81ee48542f519beffa13090dc135fffc18d8fe36db",
+                "sha256:4df708ef412fd9b59b7e6c77857e64c1f6b4c0116b751cb399384ec9a28baa66",
+                "sha256:59182e975b8c197d0146a003d0f0d5dc5487ce4899502061d8df585b0f51fba2",
+                "sha256:6128d2c0956fd60e39ec7d1c8f79426f0c915d36458df59ddd1f0cff0340305f",
+                "sha256:6168839491a533fa75f3f5d48acbb829475e6c7d9fa5c6e245153b5f79b986a3",
+                "sha256:62abab8088704121297d39c8f47156cb8fab1da731f513e59ba73946b22cf3d0",
+                "sha256:653b2bbb0bbf282c37279dd04f429947ac92713049e1efc615f68d4e64b1dbc2",
+                "sha256:6566749cd78cb37cbf8e8171b5cd2cbfc03c99f0891de12255cf17a11c07b1a3",
+                "sha256:76cbdb22f48de64811f9ce1dd4dee09665f84f32d6a26de249a50c1e90e244e0",
+                "sha256:8efcf070d60fd497db771429b1c769a3783e3a0dd96c78c027e676990176adc5",
+                "sha256:8fa4549f341a057feec4c3139056ba73e17ed03a506469f447797a51f85081b5",
+                "sha256:9380b3f2b00b23a4106ba9dd022df3e6e2e84e1788acdbdd27603b621b3288df",
+                "sha256:9ed9b280f7778ad6f71826b38a73c2fdca4077817c64bc1102fdada58e75c03c",
+                "sha256:a7b8b5bd16376c8ac2977748bd978a200326af5145d8d0e7f799e2b355d425b6",
+                "sha256:af271c2540d1cd2a137bef8d95a8052230aa1cda26dd3b2c73d858d89993d518",
+                "sha256:b561e76c9e21402d9a446cdae13398f9942388b9bff529f32dfa46220af54d00",
+                "sha256:b82400ef848bbac6b9035a105ac6acaa1fb3eea0d164e35bbb21619b88e49fed",
+                "sha256:b98af08d7bb37d3456a22f689819ea793e8d6961b9629322d7728c4039071641",
+                "sha256:c58e53e1c73109fdf4b759db9f2939325f510a8a5215135330fe6755921e4886",
+                "sha256:cbabfc12b401d074298bfda099c58dfa5348415ae2e4ec841290627cb7cb6b2e",
+                "sha256:d4a6fb98e9e9be3f7d70fd3e852369c00a027bd5ed0f3e8ade3821bcad257408",
+                "sha256:d99da85d6890267292065e654a329e1d2f483a5d2485e347383800e616a8c0b1",
+                "sha256:e58db0e0d60029915f7fc95a8683fa815e204f2e1990f1fb46a7778d57ca8c35",
+                "sha256:e5bf89fe57f702a046c7ec718fe330ed50efd4bcf74722940db2eb0919cddb1c",
+                "sha256:f612e8ef8408391a4a3366e3508bab8ef97b063b4918a317cb6e6de4415f01af",
+                "sha256:f65a2442c113afde52fb09f9a6276bbc31da71add99dc76c3adf6083234e07c6",
+                "sha256:fa0503947a99a1be94f799fac89d67a5e20c333e78ddae16e8534b151cdc588a"
+            ],
+            "markers": "python_version >= '3.5'",
+            "version": "==5.0.2"
         },
         "networkx": {
             "hashes": [
@@ -183,68 +189,73 @@
         },
         "numpy": {
             "hashes": [
-                "sha256:0ee77786eebbfa37f2141fd106b549d37c89207a0d01d8852fde1c82e9bfc0e7",
-                "sha256:199bebc296bd8a5fc31c16f256ac873dd4d5b4928dfd50e6c4995570fc71a8f3",
-                "sha256:1a307bdd3dd444b1d0daa356b5f4c7de2e24d63bdc33ea13ff718b8ec4c6a268",
-                "sha256:1ea7e859f16e72ab81ef20aae69216cfea870676347510da9244805ff9670170",
-                "sha256:271139653e8b7a046d11a78c0d33bafbddd5c443a5b9119618d0652a4eb3a09f",
-                "sha256:35bf5316af8dc7c7db1ad45bec603e5fb28671beb98ebd1d65e8059efcfd3b72",
-                "sha256:463792a249a81b9eb2b63676347f996d3f0082c2666fd0604f4180d2e5445996",
-                "sha256:50d3513469acf5b2c0406e822d3f314d7ac5788c2b438c24e5dd54d5a81ef522",
-                "sha256:50f68ebc439821b826823a8da6caa79cd080dee2a6d5ab9f1163465a060495ed",
-                "sha256:51e8d2ae7c7e985c7bebf218e56f72fa93c900ad0c8a7d9fbbbf362f45710f69",
-                "sha256:522053b731e11329dd52d258ddf7de5288cae7418b55e4b7d32f0b7e31787e9d",
-                "sha256:5ea4401ada0d3988c263df85feb33818dc995abc85b8125f6ccb762009e7bc68",
-                "sha256:604d2e5a31482a3ad2c88206efd43d6fcf666ada1f3188fd779b4917e49b7a98",
-                "sha256:6ff88bcf1872b79002569c63fe26cd2cda614e573c553c4d5b814fb5eb3d2822",
-                "sha256:7197ee0a25629ed782c7bd01871ee40702ffeef35bc48004bc2fdcc71e29ba9d",
-                "sha256:741d95eb2b505bb7a99fbf4be05fa69f466e240c2b4f2d3ddead4f1b5f82a5a5",
-                "sha256:83af653bb92d1e248ccf5fdb05ccc934c14b936bcfe9b917dc180d3f00250ac6",
-                "sha256:8802d23e4895e0c65e418abe67cdf518aa5cbb976d97f42fd591f921d6dffad0",
-                "sha256:8edc4d687a74d0a5f8b9b26532e860f4f85f56c400b3a98899fc44acb5e27add",
-                "sha256:942d2cdcb362739908c26ce8dd88db6e139d3fa829dd7452dd9ff02cba6b58b2",
-                "sha256:9a0669787ba8c9d3bb5de5d9429208882fb47764aa79123af25c5edc4f5966b9",
-                "sha256:9d08d84bb4128abb9fbd9f073e5c69f70e5dab991a9c42e5b4081ea5b01b5db0",
-                "sha256:9f7f56b5e85b08774939622b7d45a5d00ff511466522c44fc0756ac7692c00f2",
-                "sha256:a2daea1cba83210c620e359de2861316f49cc7aea8e9a6979d6cb2ddab6dda8c",
-                "sha256:b9074d062d30c2779d8af587924f178a539edde5285d961d2dfbecbac9c4c931",
-                "sha256:c4aa79993f5d856765819a3651117520e41ac3f89c3fc1cb6dee11aa562df6da",
-                "sha256:d78294f1c20f366cde8a75167f822538a7252b6e8b9d6dbfb3bdab34e7c1929e",
-                "sha256:dfdc8b53aa9838b9d44ed785431ca47aa3efaa51d0d5dd9c412ab5247151a7c4",
-                "sha256:dffed17848e8b968d8d3692604e61881aa6ef1f8074c99e81647ac84f6038535",
-                "sha256:e080087148fd70469aade2abfeadee194357defd759f9b59b349c6192aba994c",
-                "sha256:e983cbabe10a8989333684c98fdc5dd2f28b236216981e0c26ed359aaa676772",
-                "sha256:ea6171d2d8d648dee717457d0f75db49ad8c2f13100680e284d7becf3dc311a6",
-                "sha256:eefc13863bf01583a85e8c1121a901cc7cb8f059b960c4eba30901e2e6aba95f",
-                "sha256:efd656893171bbf1331beca4ec9f2e74358fc732a2084f664fd149cc4b3441d2"
-            ],
-            "index": "pypi",
-            "version": "==1.19.3"
+                "sha256:08308c38e44cc926bdfce99498b21eec1f848d24c302519e64203a8da99a97db",
+                "sha256:09c12096d843b90eafd01ea1b3307e78ddd47a55855ad402b157b6c4862197ce",
+                "sha256:13d166f77d6dc02c0a73c1101dd87fdf01339febec1030bd810dcd53fff3b0f1",
+                "sha256:141ec3a3300ab89c7f2b0775289954d193cc8edb621ea05f99db9cb181530512",
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-            "version": "==0.25.3"
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+            "version": "==1.1.4"
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@@ -277,6 +288,7 @@
             "hashes": [
                 "sha256:2e636185d9eb976a18a8a8e96efce62f2905fea90041958d8cc2a189756ebf3e"
             ],
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             "version": "==0.17.3"
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         "python-dateutil": {
@@ -296,16 +308,17 @@
         },
         "pytz": {
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+                "sha256:5c55e189b682d420be27c6995ba6edce0c0a77dd67bfbe2ae6607134d5851ffd"
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-            "version": "==2020.1"
+            "version": "==2020.4"
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                 "sha256:e1e14750bcf95016381e4d472bad004eef710f2d6417240904070b3d6654485f"
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             "version": "==2020.1"
         },
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@@ -327,45 +340,52 @@
         },
         "scipy": {
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+            "version": "==1.5.4"
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             "extras": [
                 "falcon"
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-            "version": "==0.14.4"
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                 "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
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             "version": "==1.15.0"
         },
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@@ -386,18 +406,19 @@
         },
         "toml": {
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-                "sha256:bda89d5935c2eac546d648028b9901107a595863cb36bae0c73ac804a9b4ce88"
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-            "version": "==0.10.1"
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-                "sha256:f5321fbe4bf3fefa0efd0bfe7fb14e90909eb62a48ccda331726b4319897dd5e"
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-            "version": "==1.25.11"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
+            "version": "==1.26.2"
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         "yarl": {
             "hashes": [
@@ -447,65 +468,61 @@
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             "version": "==1.4.4"
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-        "aspy.yaml": {
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-                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
+                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
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-            "version": "==19.3.0"
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                 "sha256:cf22deb93d4bcf92f345a5c3cd39d3d41d6340adc60c78bbbd6588c384fda6a1"
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             "version": "==3.2.0"
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         "coverage": {
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-                "sha256:0be0f1ed45fc0c185cfd4ecc19a1d6532d72f86a2bac9de7e24541febad72650",
-                "sha256:141f08ed3c4b1847015e2cd62ec06d35e67a3ac185c26f7635f4406b90afa9c5",
-                "sha256:19e4df788a0581238e9390c85a7a09af39c7b539b29f25c89209e6c3e371270d",
-                "sha256:23cc09ed395b03424d1ae30dcc292615c1372bfba7141eb85e11e50efaa6b351",
-                "sha256:245388cda02af78276b479f299bbf3783ef0a6a6273037d7c60dc73b8d8d7755",
-                "sha256:331cb5115673a20fb131dadd22f5bcaf7677ef758741312bee4937d71a14b2ef",
-                "sha256:386e2e4090f0bc5df274e720105c342263423e77ee8826002dcffe0c9533dbca",
-                "sha256:3a794ce50daee01c74a494919d5ebdc23d58873747fa0e288318728533a3e1ca",
-                "sha256:60851187677b24c6085248f0a0b9b98d49cba7ecc7ec60ba6b9d2e5574ac1ee9",
-                "sha256:63a9a5fc43b58735f65ed63d2cf43508f462dc49857da70b8980ad78d41d52fc",
-                "sha256:6b62544bb68106e3f00b21c8930e83e584fdca005d4fffd29bb39fb3ffa03cb5",
-                "sha256:6ba744056423ef8d450cf627289166da65903885272055fb4b5e113137cfa14f",
-                "sha256:7494b0b0274c5072bddbfd5b4a6c6f18fbbe1ab1d22a41e99cd2d00c8f96ecfe",
-                "sha256:826f32b9547c8091679ff292a82aca9c7b9650f9fda3e2ca6bf2ac905b7ce888",
-                "sha256:93715dffbcd0678057f947f496484e906bf9509f5c1c38fc9ba3922893cda5f5",
-                "sha256:9a334d6c83dfeadae576b4d633a71620d40d1c379129d587faa42ee3e2a85cce",
-                "sha256:af7ed8a8aa6957aac47b4268631fa1df984643f07ef00acd374e456364b373f5",
-                "sha256:bf0a7aed7f5521c7ca67febd57db473af4762b9622254291fbcbb8cd0ba5e33e",
-                "sha256:bf1ef9eb901113a9805287e090452c05547578eaab1b62e4ad456fcc049a9b7e",
-                "sha256:c0afd27bc0e307a1ffc04ca5ec010a290e49e3afbe841c5cafc5c5a80ecd81c9",
-                "sha256:dd579709a87092c6dbee09d1b7cfa81831040705ffa12a1b248935274aee0437",
-                "sha256:df6712284b2e44a065097846488f66840445eb987eb81b3cc6e4149e7b6982e1",
-                "sha256:e07d9f1a23e9e93ab5c62902833bf3e4b1f65502927379148b6622686223125c",
-                "sha256:e2ede7c1d45e65e209d6093b762e98e8318ddeff95317d07a27a2140b80cfd24",
-                "sha256:e4ef9c164eb55123c62411f5936b5c2e521b12356037b6e1c2617cef45523d47",
-                "sha256:eca2b7343524e7ba246cab8ff00cab47a2d6d54ada3b02772e908a45675722e2",
-                "sha256:eee64c616adeff7db37cc37da4180a3a5b6177f5c46b187894e633f088fb5b28",
-                "sha256:ef824cad1f980d27f26166f86856efe11eff9912c4fed97d3804820d43fa550c",
-                "sha256:efc89291bd5a08855829a3c522df16d856455297cf35ae827a37edac45f466a7",
-                "sha256:fa964bae817babece5aa2e8c1af841bebb6d0b9add8e637548809d040443fee0",
-                "sha256:ff37757e068ae606659c28c3bd0d923f9d29a85de79bf25b2b34b148473b5025"
-            ],
-            "index": "pypi",
-            "version": "==4.5.4"
+                "sha256:0203acd33d2298e19b57451ebb0bed0ab0c602e5cf5a818591b4918b1f97d516",
+                "sha256:0f313707cdecd5cd3e217fc68c78a960b616604b559e9ea60cc16795c4304259",
+                "sha256:1c6703094c81fa55b816f5ae542c6ffc625fec769f22b053adb42ad712d086c9",
+                "sha256:1d44bb3a652fed01f1f2c10d5477956116e9b391320c94d36c6bf13b088a1097",
+                "sha256:280baa8ec489c4f542f8940f9c4c2181f0306a8ee1a54eceba071a449fb870a0",
+                "sha256:29a6272fec10623fcbe158fdf9abc7a5fa032048ac1d8631f14b50fbfc10d17f",
+                "sha256:2b31f46bf7b31e6aa690d4c7a3d51bb262438c6dcb0d528adde446531d0d3bb7",
+                "sha256:2d43af2be93ffbad25dd959899b5b809618a496926146ce98ee0b23683f8c51c",
+                "sha256:381ead10b9b9af5f64646cd27107fb27b614ee7040bb1226f9c07ba96625cbb5",
+                "sha256:47a11bdbd8ada9b7ee628596f9d97fbd3851bd9999d398e9436bd67376dbece7",
+                "sha256:4d6a42744139a7fa5b46a264874a781e8694bb32f1d76d8137b68138686f1729",
+                "sha256:50691e744714856f03a86df3e2bff847c2acede4c191f9a1da38f088df342978",
+                "sha256:530cc8aaf11cc2ac7430f3614b04645662ef20c348dce4167c22d99bec3480e9",
+                "sha256:582ddfbe712025448206a5bc45855d16c2e491c2dd102ee9a2841418ac1c629f",
+                "sha256:63808c30b41f3bbf65e29f7280bf793c79f54fb807057de7e5238ffc7cc4d7b9",
+                "sha256:71b69bd716698fa62cd97137d6f2fdf49f534decb23a2c6fc80813e8b7be6822",
+                "sha256:7858847f2d84bf6e64c7f66498e851c54de8ea06a6f96a32a1d192d846734418",
+                "sha256:78e93cc3571fd928a39c0b26767c986188a4118edc67bc0695bc7a284da22e82",
+                "sha256:7f43286f13d91a34fadf61ae252a51a130223c52bfefb50310d5b2deb062cf0f",
+                "sha256:86e9f8cd4b0cdd57b4ae71a9c186717daa4c5a99f3238a8723f416256e0b064d",
+                "sha256:8f264ba2701b8c9f815b272ad568d555ef98dfe1576802ab3149c3629a9f2221",
+                "sha256:9342dd70a1e151684727c9c91ea003b2fb33523bf19385d4554f7897ca0141d4",
+                "sha256:9361de40701666b034c59ad9e317bae95c973b9ff92513dd0eced11c6adf2e21",
+                "sha256:9669179786254a2e7e57f0ecf224e978471491d660aaca833f845b72a2df3709",
+                "sha256:aac1ba0a253e17889550ddb1b60a2063f7474155465577caa2a3b131224cfd54",
+                "sha256:aef72eae10b5e3116bac6957de1df4d75909fc76d1499a53fb6387434b6bcd8d",
+                "sha256:bd3166bb3b111e76a4f8e2980fa1addf2920a4ca9b2b8ca36a3bc3dedc618270",
+                "sha256:c1b78fb9700fc961f53386ad2fd86d87091e06ede5d118b8a50dea285a071c24",
+                "sha256:c3888a051226e676e383de03bf49eb633cd39fc829516e5334e69b8d81aae751",
+                "sha256:c5f17ad25d2c1286436761b462e22b5020d83316f8e8fcb5deb2b3151f8f1d3a",
+                "sha256:c851b35fc078389bc16b915a0a7c1d5923e12e2c5aeec58c52f4aa8085ac8237",
+                "sha256:cb7df71de0af56000115eafd000b867d1261f786b5eebd88a0ca6360cccfaca7",
+                "sha256:cedb2f9e1f990918ea061f28a0f0077a07702e3819602d3507e2ff98c8d20636",
+                "sha256:e8caf961e1b1a945db76f1b5fa9c91498d15f545ac0ababbe575cfab185d3bd8"
+            ],
+            "index": "pypi",
+            "version": "==5.3"
         },
         "distlib": {
             "hashes": [
@@ -514,13 +531,6 @@
             ],
             "version": "==0.3.1"
         },
-        "entrypoints": {
-            "hashes": [
-                "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19",
-                "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"
-            ],
-            "version": "==0.3"
-        },
         "filelock": {
             "hashes": [
                 "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59",
@@ -530,27 +540,27 @@
         },
         "flake8": {
             "hashes": [
-                "sha256:45681a117ecc81e870cbf1262835ae4af5e7a8b08e40b944a8a6e6b895914cfb",
-                "sha256:49356e766643ad15072a789a20915d3c91dc89fd313ccd71802303fd67e4deca"
+                "sha256:749dbbd6bfd0cf1318af27bf97a14e28e5ff548ef8e5b1566ccfb25a11e7c839",
+                "sha256:aadae8761ec651813c24be05c6f7b4680857ef6afaae4651a4eccaef97ce6c3b"
             ],
             "index": "pypi",
-            "version": "==3.7.9"
+            "version": "==3.8.4"
         },
         "flake8-annotations": {
             "hashes": [
-                "sha256:47705be09c6e56e9e3ac1656e8f5ed70862a4657116dc472f5a56c1bdc5172b1",
-                "sha256:564702ace354e1059252755be79d082a70ae1851c86044ae1a96d0f5453280e9"
+                "sha256:0bcebb0792f1f96d617ded674dca7bf64181870bfe5dace353a1483551f8e5f1",
+                "sha256:bebd11a850f6987a943ce8cdff4159767e0f5f89b3c88aca64680c2175ee02df"
             ],
             "index": "pypi",
-            "version": "==1.2.0"
+            "version": "==2.4.1"
         },
         "flake8-bugbear": {
             "hashes": [
-                "sha256:d8c466ea79d5020cb20bf9f11cf349026e09517a42264f313d3f6fddb83e0571",
-                "sha256:ded4d282778969b5ab5530ceba7aa1a9f1b86fa7618fc96a19a1d512331640f8"
+                "sha256:a3ddc03ec28ba2296fc6f89444d1c946a6b76460f859795b35b77d4920a51b63",
+                "sha256:bd02e4b009fb153fe6072c31c52aeab5b133d508095befb2ffcf3b41c4823162"
             ],
             "index": "pypi",
-            "version": "==19.8.0"
+            "version": "==20.1.4"
         },
         "flake8-docstrings": {
             "hashes": [
@@ -578,26 +588,26 @@
         },
         "flake8-quotes": {
             "hashes": [
-                "sha256:c844c9592940c8926c60f00bc620808912ff2acd34923ab5338f3a5ca618a331"
+                "sha256:3f1116e985ef437c130431ac92f9b3155f8f652fda7405ac22ffdfd7a9d1055e"
             ],
             "index": "pypi",
-            "version": "==2.1.2"
+            "version": "==3.2.0"
         },
         "flake8-string-format": {
             "hashes": [
-                "sha256:68ea72a1a5b75e7018cae44d14f32473c798cf73d75cbaed86c6a9a907b770b2",
-                "sha256:774d56103d9242ed968897455ef49b7d6de272000cfa83de5814273a868832f1"
+                "sha256:65f3da786a1461ef77fca3780b314edb2853c377f2e35069723348c8917deaa2",
+                "sha256:812ff431f10576a74c89be4e85b8e075a705be39bc40c4b4278b5b13e2afa9af"
             ],
             "index": "pypi",
-            "version": "==0.2.3"
+            "version": "==0.3.0"
         },
         "flake8-tidy-imports": {
             "hashes": [
-                "sha256:1c476aabc6e8db26dc75278464a3a392dba0ea80562777c5f13fd5cdf2646154",
-                "sha256:b3f5b96affd0f57cacb6621ed28286ce67edaca807757b51227043ebf7b136a1"
+                "sha256:62059ca07d8a4926b561d392cbab7f09ee042350214a25cf12823384a45d27dd",
+                "sha256:c30b40337a2e6802ba3bb611c26611154a27e94c53fc45639e3e282169574fd3"
             ],
             "index": "pypi",
-            "version": "==2.0.0"
+            "version": "==4.1.0"
         },
         "flake8-todo": {
             "hashes": [
@@ -608,10 +618,11 @@
         },
         "identify": {
             "hashes": [
-                "sha256:3139bf72d81dfd785b0a464e2776bd59bdc725b4cc10e6cf46b56a0db931c82e",
-                "sha256:969d844b7a85d32a5f9ac4e163df6e846d73c87c8b75847494ee8f4bd2186421"
+                "sha256:5dd84ac64a9a115b8e0b27d1756b244b882ad264c3c423f42af8235a6e71ca12",
+                "sha256:c9504ba6a043ee2db0a9d69e43246bc138034895f6338d5aed1b41e4a73b1513"
             ],
-            "version": "==1.5.6"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.5.9"
         },
         "junit-xml": {
             "hashes": [
@@ -635,33 +646,35 @@
         },
         "pre-commit": {
             "hashes": [
-                "sha256:8f48d8637bdae6fa70cc97db9c1dd5aa7c5c8bf71968932a380628c25978b850",
-                "sha256:f92a359477f3252452ae2e8d3029de77aec59415c16ae4189bcfba40b757e029"
+                "sha256:22e6aa3bd571debb01eb7d34483f11c01b65237be4eebbf30c3d4fb65762d315",
+                "sha256:905ebc9b534b991baec87e934431f2d0606ba27f2b90f7f652985f5a5b8b6ae6"
             ],
             "index": "pypi",
-            "version": "==1.21.0"
+            "version": "==2.8.2"
         },
         "pycodestyle": {
             "hashes": [
-                "sha256:95a2219d12372f05704562a14ec30bc76b05a5b297b21a5dfe3f6fac3491ae56",
-                "sha256:e40a936c9a450ad81df37f549d676d127b1b66000a6c500caa2b085bc0ca976c"
+                "sha256:2295e7b2f6b5bd100585ebcb1f616591b652db8a741695b3d8f5d28bdc934367",
+                "sha256:c58a7d2815e0e8d7972bf1803331fb0152f867bd89adf8a01dfd55085434192e"
             ],
-            "version": "==2.5.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==2.6.0"
         },
         "pydocstyle": {
             "hashes": [
-                "sha256:04c84e034ebb56eb6396c820442b8c4499ac5eb94a3bda88951ac3dc519b6058",
-                "sha256:66aff87ffe34b1e49bff2dd03a88ce6843be2f3346b0c9814410d34987fbab59"
+                "sha256:19b86fa8617ed916776a11cd8bc0197e5b9856d5433b777f51a3defe13075325",
+                "sha256:aca749e190a01726a4fb472dd4ef23b5c9da7b9205c0a7857c06533de13fd678"
             ],
             "index": "pypi",
-            "version": "==4.0.1"
+            "version": "==5.1.1"
         },
         "pyflakes": {
             "hashes": [
-                "sha256:17dbeb2e3f4d772725c777fabc446d5634d1038f234e77343108ce445ea69ce0",
-                "sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2"
+                "sha256:0d94e0e05a19e57a99444b6ddcf9a6eb2e5c68d3ca1e98e90707af8152c90a92",
+                "sha256:35b2d75ee967ea93b55750aa9edbbf72813e06a66ba54438df2cfac9e3c27fc8"
             ],
-            "version": "==2.1.1"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==2.2.0"
         },
         "pyyaml": {
             "hashes": [
@@ -685,6 +698,7 @@
                 "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
                 "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2'",
             "version": "==1.15.0"
         },
         "snowballstemmer": {
@@ -696,25 +710,26 @@
         },
         "toml": {
             "hashes": [
-                "sha256:926b612be1e5ce0634a2ca03470f95169cf16f939018233a670519cb4ac58b0f",
-                "sha256:bda89d5935c2eac546d648028b9901107a595863cb36bae0c73ac804a9b4ce88"
+                "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b",
+                "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"
             ],
             "index": "pypi",
-            "version": "==0.10.1"
+            "version": "==0.10.2"
         },
         "unittest-xml-reporting": {
             "hashes": [
-                "sha256:358bbdaf24a26d904cc1c26ef3078bca7fc81541e0a54c8961693cc96a6f35e0",
-                "sha256:9d28ddf6524cf0ff9293f61bd12e792de298f8561a5c945acea63fb437789e0e"
+                "sha256:7bf515ea8cb244255a25100cd29db611a73f8d3d0aaf672ed3266307e14cc1ca",
+                "sha256:984cebba69e889401bfe3adb9088ca376b3a1f923f0590d005126c1bffd1a695"
             ],
             "index": "pypi",
-            "version": "==2.5.2"
+            "version": "==3.0.4"
         },
         "virtualenv": {
             "hashes": [
                 "sha256:b0011228208944ce71052987437d3843e05690b2f23d1c7da4263fde104c97a2",
                 "sha256:b8d6110f493af256a40d65e29846c69340a947669eec8ce784fcf3dd3af28380"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==20.1.0"
         }
     }
diff --git a/docker/base.Dockerfile b/docker/base.Dockerfile
index bbd0110..ed3b70e 100644
--- a/docker/base.Dockerfile
+++ b/docker/base.Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.8.0-slim-buster as builder
+FROM python:3.9-slim-buster as builder
 RUN apt-get -y update \
     && apt-get install -y \
         bison=2:3.3.* \
@@ -19,7 +19,7 @@ RUN git clone \
 WORKDIR /nsjail
 RUN make
 
-FROM python:3.8.0-slim-buster
+FROM python:3.9-slim-buster
 ENV PIP_NO_CACHE_DIR=false
 
 RUN apt-get -y update \