diff --git a/Pipfile.lock b/Pipfile.lock
index 6aea409..4db09fc 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -32,41 +32,42 @@
         },
         "babel": {
             "hashes": [
-                "sha256:1aac2ae2d0d8ea368fa90906567f5c08463d98ade155c0c4bfedd6a0f7160e38",
-                "sha256:d670ea0b10f8b723672d3a6abeb87b565b244da220d76b4dba1b66269ec152d4"
+                "sha256:ab49e12b91d937cd11f0b67cb259a57ab4ad2b59ac7a3b41d6c06c0ac5b0def9",
+                "sha256:bc0c176f9f6a994582230df350aa6e05ba2ebe4b3ac317eab29d9be5d2768da0"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.8.0"
+            "index": "pypi",
+            "version": "==2.9.1"
         },
         "certifi": {
             "hashes": [
-                "sha256:5930595817496dd21bb8dc35dad090f1c2cd0adfaf21204bf6732ca5d8ee34d3",
-                "sha256:8fc0819f1f30ba15bdb34cceffb9ef04d99f420f68eb75d901e9560b8749fc41"
+                "sha256:78884e7c1d4b00ce3cea67b44566851c4343c120abd683433ce934a68ea58872",
+                "sha256:d62a0163eb4c2344ac042ab2bdf75399a71a2d8c7d47eac2e2ee91b9d6339569"
             ],
-            "version": "==2020.6.20"
+            "version": "==2021.10.8"
         },
-        "chardet": {
+        "charset-normalizer": {
             "hashes": [
-                "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae",
-                "sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691"
+                "sha256:e019de665e2bcf9c2b64e2e5aa025fa991da8720daa3c1138cadd2fd1856aed0",
+                "sha256:f7af805c321bfa1ce6714c51f254e0d5bb5e5834039bc17db7ebe3a4cec9492b"
             ],
-            "version": "==3.0.4"
+            "markers": "python_version >= '3'",
+            "version": "==2.0.7"
         },
         "docutils": {
             "hashes": [
-                "sha256:0c5b78adfbf7762415433f5515cd5c9e762339e23369dbe8000d84a4bf4ab3af",
-                "sha256:c2de3a60e9e7d07be26b7f2b00ca0309c207e06c100f9cc2a94931fc75a478fc"
+                "sha256:686577d2e4c32380bb50cbb22f575ed742d58168cee37e99117a854bcd88f125",
+                "sha256:cf316c8370a737a022b72b56874f6602acf974a37a9fba42ec2876387549fc61"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
-            "version": "==0.16"
+            "version": "==0.17.1"
         },
         "idna": {
             "hashes": [
-                "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6",
-                "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"
+                "sha256:84d9dd047ffa80596e0f246e2eab0b391788b0503584e8945f2368256d2735ff",
+                "sha256:9d643ff0a55b762d5cdb124b8eaa99c66322e2157b69160bc32796e824360e6d"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.10"
+            "markers": "python_version >= '3'",
+            "version": "==3.3"
         },
         "imagesize": {
             "hashes": [
@@ -78,11 +79,11 @@
         },
         "jinja2": {
             "hashes": [
-                "sha256:89aab215427ef59c34ad58735269eb58b1a5808103067f7bb9d5836c651b3bb0",
-                "sha256:f0a4641d3cf955324a89c04f3d94663aa4d638abe8f733ecd3582848e1c37035"
+                "sha256:827a0e32839ab1600d4eb1c4c33ec5a8edfbc5cb42dafa13b81f182f97784b45",
+                "sha256:8569982d3f0889eed11dd620c706d39b60c36d6d25843961f33f77fb6bc6b20c"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
-            "version": "==2.11.2"
+            "markers": "python_version >= '3.6'",
+            "version": "==3.0.2"
         },
         "jsx-lexer": {
             "hashes": [
@@ -94,56 +95,77 @@
         },
         "livereload": {
             "hashes": [
-                "sha256:d1eddcb5c5eb8d2ca1fa1f750e580da624c0f7fcb734aa5780dc81b7dcbd89be"
+                "sha256:776f2f865e59fde56490a56bcc6773b6917366bce0c267c60ee8aaf1a0959869"
             ],
-            "version": "==2.6.2"
+            "version": "==2.6.3"
         },
         "markupsafe": {
             "hashes": [
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-                "sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42",
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-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==1.1.1"
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+                "sha256:f826e31d18b516f653fe296d967d700fddad5901ae07c622bb3705955e1faa94",
+                "sha256:f8ba0e8349a38d3001fae7eadded3f6606f0da5d748ee53cc1dab1d6527b9509",
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+                "sha256:fa130dd50c57d53368c9d59395cb5526eda596d3ffe36666cd81a44d56e48872"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==2.0.1"
         },
         "packaging": {
             "hashes": [
-                "sha256:4357f74f47b9c12db93624a82154e9b120fa8293699949152b22065d556079f8",
-                "sha256:998416ba6962ae7fbd6596850b80e17859a5753ba17c32284f67bfff33784181"
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-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==20.4"
+            "markers": "python_version >= '3.6'",
+            "version": "==21.0"
         },
         "pathtools": {
             "hashes": [
@@ -159,11 +181,11 @@
         },
         "pygments": {
             "hashes": [
-                "sha256:647344a061c249a3b74e230c739f434d7ea4d8b1d5f3721bc0f3558049b38f44",
-                "sha256:ff7a40b4860b727ab48fad6360eb351cc1b33cbf9b15a0f689ca5353e9463324"
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             ],
             "markers": "python_version >= '3.5'",
-            "version": "==2.6.1"
+            "version": "==2.10.0"
         },
         "pyparsing": {
             "hashes": [
@@ -175,49 +197,72 @@
         },
         "pytz": {
             "hashes": [
-                "sha256:a494d53b6d39c3c6e44c3bec237336e14305e4f29bbf800b599253057fbb79ed",
-                "sha256:c35965d010ce31b23eeb663ed3cc8c906275d6be1a34393a1d73a41febf4a048"
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+                "sha256:acad2d8b20a1af07d4e4c9d2e9285c5ed9104354062f275f3fcd88dcef4f1326"
             ],
-            "version": "==2020.1"
+            "version": "==2021.3"
         },
         "pyyaml": {
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-            "version": "==5.3.1"
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+                "sha256:2cd5df3de48857ed0544b34e2d40e9fac445930039f3cfe4bcc592a1f836d513",
+                "sha256:40527857252b61eacd1d9af500c3337ba8deb8fc298940291486c465c8b46ec0",
+                "sha256:473f9edb243cb1935ab5a084eb238d842fb8f404ed2193a915d1784b5a6b5fc0",
+                "sha256:48c346915c114f5fdb3ead70312bd042a953a8ce5c7106d5bfb1a5254e47da92",
+                "sha256:50602afada6d6cbfad699b0c7bb50d5ccffa7e46a3d738092afddc1f9758427f",
+                "sha256:68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2",
+                "sha256:77f396e6ef4c73fdc33a9157446466f1cff553d979bd00ecb64385760c6babdc",
+                "sha256:819b3830a1543db06c4d4b865e70ded25be52a2e0631ccd2f6a47a2822f2fd7c",
+                "sha256:897b80890765f037df3403d22bab41627ca8811ae55e9a722fd0392850ec4d86",
+                "sha256:98c4d36e99714e55cfbaaee6dd5badbc9a1ec339ebfc3b1f52e293aee6bb71a4",
+                "sha256:9df7ed3b3d2e0ecfe09e14741b857df43adb5a3ddadc919a2d94fbdf78fea53c",
+                "sha256:9fa600030013c4de8165339db93d182b9431076eb98eb40ee068700c9c813e34",
+                "sha256:a80a78046a72361de73f8f395f1f1e49f956c6be882eed58505a15f3e430962b",
+                "sha256:b3d267842bf12586ba6c734f89d1f5b871df0273157918b0ccefa29deb05c21c",
+                "sha256:b5b9eccad747aabaaffbc6064800670f0c297e52c12754eb1d976c57e4f74dcb",
+                "sha256:c5687b8d43cf58545ade1fe3e055f70eac7a5a1a0bf42824308d868289a95737",
+                "sha256:cba8c411ef271aa037d7357a2bc8f9ee8b58b9965831d9e51baf703280dc73d3",
+                "sha256:d15a181d1ecd0d4270dc32edb46f7cb7733c7c508857278d3d378d14d606db2d",
+                "sha256:d4db7c7aef085872ef65a8fd7d6d09a14ae91f691dec3e87ee5ee0539d516f53",
+                "sha256:d4eccecf9adf6fbcc6861a38015c2a64f38b9d94838ac1810a9023a0609e1b78",
+                "sha256:d67d839ede4ed1b28a4e8909735fc992a923cdb84e618544973d7dfc71540803",
+                "sha256:daf496c58a8c52083df09b80c860005194014c3698698d1a57cbcfa182142a3a",
+                "sha256:e61ceaab6f49fb8bdfaa0f92c4b57bcfbea54c09277b1b4f7ac376bfb7a7c174",
+                "sha256:f84fbc98b019fef2ee9a1cb3ce93e3187a6df0b2538a651bfb890254ba9f90b5"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==6.0"
         },
         "requests": {
             "hashes": [
-                "sha256:b3559a131db72c33ee969480840fff4bb6dd111de7dd27c8ee1f820f4f00231b",
-                "sha256:fe75cc94a9443b9246fc7049224f75604b113c36acb93f87b80ed42c44cbb898"
+                "sha256:6c1246513ecd5ecd4528a0906f910e8f0f9c6b8ec72030dc9fd154dc1a6efd24",
+                "sha256:b8aa58f8cf793ffd8782d3d8cb19e66ef36f7aba4353eec859e74678b01b07a7"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
-            "version": "==2.24.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
+            "version": "==2.26.0"
         },
         "six": {
             "hashes": [
-                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
-                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==1.15.0"
+            "version": "==1.16.0"
         },
         "snowballstemmer": {
             "hashes": [
-                "sha256:209f257d7533fdb3cb73bdbd24f436239ca3b2fa67d56f6ff88e86be08cc5ef0",
-                "sha256:df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52"
+                "sha256:b51b447bea85f9968c13b650126a888aabd4cb4463fca868ec596826325dedc2",
+                "sha256:e997baa4f2e9139951b6f4c631bad912dfd3c792467e2f03d7239464af90e914"
             ],
-            "version": "==2.0.0"
+            "version": "==2.1.0"
         },
         "sphinx": {
             "hashes": [
@@ -253,11 +298,11 @@
         },
         "sphinxcontrib-htmlhelp": {
             "hashes": [
-                "sha256:3c0bc24a2c41e340ac37c85ced6dafc879ab485c095b1d65d2461ac2f7cca86f",
-                "sha256:e8f5bb7e31b2dbb25b9cc435c8ab7a79787ebf7f906155729338f3156d93659b"
+                "sha256:d412243dfb797ae3ec2b59eca0e52dac12e75a241bf0e4eb861e450d06c6ed07",
+                "sha256:f5f8bb2d0d629f398bf47d0d69c07bc13b65f75a81ad9e2f71a63d4b7a2f6db2"
             ],
-            "markers": "python_version >= '3.5'",
-            "version": "==1.0.3"
+            "markers": "python_version >= '3.6'",
+            "version": "==2.0.0"
         },
         "sphinxcontrib-jsmath": {
             "hashes": [
@@ -277,40 +322,95 @@
         },
         "sphinxcontrib-serializinghtml": {
             "hashes": [
-                "sha256:eaa0eccc86e982a9b939b2b82d12cc5d013385ba5eadcc7e4fed23f4405f77bc",
-                "sha256:f242a81d423f59617a8e5cf16f5d4d74e28ee9a66f9e5b637a18082991db5a9a"
+                "sha256:352a9a00ae864471d3a7ead8d7d79f5fc0b57e8b3f95e9867eb9eb28999b92fd",
+                "sha256:aa5f6de5dfdf809ef505c4895e51ef5c9eac17d0f287933eb49ec495280b6952"
             ],
             "markers": "python_version >= '3.5'",
-            "version": "==1.1.4"
+            "version": "==1.1.5"
         },
         "tornado": {
             "hashes": [
-                "sha256:0fe2d45ba43b00a41cd73f8be321a44936dc1aba233dee979f17a042b83eb6dc",
-                "sha256:22aed82c2ea340c3771e3babc5ef220272f6fd06b5108a53b4976d0d722bcd52",
-                "sha256:2c027eb2a393d964b22b5c154d1a23a5f8727db6fda837118a776b29e2b8ebc6",
-                "sha256:5217e601700f24e966ddab689f90b7ea4bd91ff3357c3600fa1045e26d68e55d",
-                "sha256:5618f72e947533832cbc3dec54e1dffc1747a5cb17d1fd91577ed14fa0dc081b",
-                "sha256:5f6a07e62e799be5d2330e68d808c8ac41d4a259b9cea61da4101b83cb5dc673",
-                "sha256:c58d56003daf1b616336781b26d184023ea4af13ae143d9dda65e31e534940b9",
-                "sha256:c952975c8ba74f546ae6de2e226ab3cc3cc11ae47baf607459a6728585bb542a",
-                "sha256:c98232a3ac391f5faea6821b53db8db461157baa788f5d6222a193e9456e1740"
+                "sha256:0a00ff4561e2929a2c37ce706cb8233b7907e0cdc22eab98888aca5dd3775feb",
+                "sha256:0d321a39c36e5f2c4ff12b4ed58d41390460f798422c4504e09eb5678e09998c",
+                "sha256:1e8225a1070cd8eec59a996c43229fe8f95689cb16e552d130b9793cb570a288",
+                "sha256:20241b3cb4f425e971cb0a8e4ffc9b0a861530ae3c52f2b0434e6c1b57e9fd95",
+                "sha256:25ad220258349a12ae87ede08a7b04aca51237721f63b1808d39bdb4b2164558",
+                "sha256:33892118b165401f291070100d6d09359ca74addda679b60390b09f8ef325ffe",
+                "sha256:33c6e81d7bd55b468d2e793517c909b139960b6c790a60b7991b9b6b76fb9791",
+                "sha256:3447475585bae2e77ecb832fc0300c3695516a47d46cefa0528181a34c5b9d3d",
+                "sha256:34ca2dac9e4d7afb0bed4677512e36a52f09caa6fded70b4e3e1c89dbd92c326",
+                "sha256:3e63498f680547ed24d2c71e6497f24bca791aca2fe116dbc2bd0ac7f191691b",
+                "sha256:548430be2740e327b3fe0201abe471f314741efcb0067ec4f2d7dcfb4825f3e4",
+                "sha256:6196a5c39286cc37c024cd78834fb9345e464525d8991c21e908cc046d1cc02c",
+                "sha256:61b32d06ae8a036a6607805e6720ef00a3c98207038444ba7fd3d169cd998910",
+                "sha256:6286efab1ed6e74b7028327365cf7346b1d777d63ab30e21a0f4d5b275fc17d5",
+                "sha256:65d98939f1a2e74b58839f8c4dab3b6b3c1ce84972ae712be02845e65391ac7c",
+                "sha256:66324e4e1beede9ac79e60f88de548da58b1f8ab4b2f1354d8375774f997e6c0",
+                "sha256:6c77c9937962577a6a76917845d06af6ab9197702a42e1346d8ae2e76b5e3675",
+                "sha256:70dec29e8ac485dbf57481baee40781c63e381bebea080991893cd297742b8fd",
+                "sha256:7250a3fa399f08ec9cb3f7b1b987955d17e044f1ade821b32e5f435130250d7f",
+                "sha256:748290bf9112b581c525e6e6d3820621ff020ed95af6f17fedef416b27ed564c",
+                "sha256:7da13da6f985aab7f6f28debab00c67ff9cbacd588e8477034c0652ac141feea",
+                "sha256:8f959b26f2634a091bb42241c3ed8d3cedb506e7c27b8dd5c7b9f745318ddbb6",
+                "sha256:9de9e5188a782be6b1ce866e8a51bc76a0fbaa0e16613823fc38e4fc2556ad05",
+                "sha256:a48900ecea1cbb71b8c71c620dee15b62f85f7c14189bdeee54966fbd9a0c5bd",
+                "sha256:b87936fd2c317b6ee08a5741ea06b9d11a6074ef4cc42e031bc6403f82a32575",
+                "sha256:c77da1263aa361938476f04c4b6c8916001b90b2c2fdd92d8d535e1af48fba5a",
+                "sha256:cb5ec8eead331e3bb4ce8066cf06d2dfef1bfb1b2a73082dfe8a161301b76e37",
+                "sha256:cc0ee35043162abbf717b7df924597ade8e5395e7b66d18270116f8745ceb795",
+                "sha256:d14d30e7f46a0476efb0deb5b61343b1526f73ebb5ed84f23dc794bdb88f9d9f",
+                "sha256:d371e811d6b156d82aa5f9a4e08b58debf97c302a35714f6f45e35139c332e32",
+                "sha256:d3d20ea5782ba63ed13bc2b8c291a053c8d807a8fa927d941bd718468f7b950c",
+                "sha256:d3f7594930c423fd9f5d1a76bee85a2c36fd8b4b16921cae7e965f22575e9c01",
+                "sha256:dcef026f608f678c118779cd6591c8af6e9b4155c44e0d1bc0c87c036fb8c8c4",
+                "sha256:e0791ac58d91ac58f694d8d2957884df8e4e2f6687cdf367ef7eb7497f79eaa2",
+                "sha256:e385b637ac3acaae8022e7e47dfa7b83d3620e432e3ecb9a3f7f58f150e50921",
+                "sha256:e519d64089b0876c7b467274468709dadf11e41d65f63bba207e04217f47c085",
+                "sha256:e7229e60ac41a1202444497ddde70a48d33909e484f96eb0da9baf8dc68541df",
+                "sha256:ed3ad863b1b40cd1d4bd21e7498329ccaece75db5a5bf58cd3c9f130843e7102",
+                "sha256:f0ba29bafd8e7e22920567ce0d232c26d4d47c8b5cf4ed7b562b5db39fa199c5",
+                "sha256:fa2ba70284fa42c2a5ecb35e322e68823288a4251f9ba9cc77be04ae15eada68",
+                "sha256:fba85b6cd9c39be262fcd23865652920832b61583de2a2ca907dbd8e8a8c81e5"
             ],
             "markers": "python_version >= '3.5'",
-            "version": "==6.0.4"
+            "version": "==6.1"
         },
         "urllib3": {
             "hashes": [
-                "sha256:3018294ebefce6572a474f0604c2021e33b3fd8006ecd11d62107a5d2a963527",
-                "sha256:88206b0eb87e6d677d424843ac5209e3fb9d0190d0ee169599165ec25e9d9115"
+                "sha256:4987c65554f7a2dbf30c18fd48778ef124af6fab771a377103da0585e2336ece",
+                "sha256:c4fdf4019605b6e5423637e01bc9fe4daef873709a7973e195ceba0a62bbc844"
             ],
             "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": "==1.25.9"
+            "version": "==1.26.7"
         },
         "watchdog": {
             "hashes": [
-                "sha256:4214e1379d128b0588021880ccaf40317ee156d4603ac388b9adcf29165e0c04"
-            ],
-            "version": "==0.10.3"
+                "sha256:25fb5240b195d17de949588628fdf93032ebf163524ef08933db0ea1f99bd685",
+                "sha256:3386b367e950a11b0568062b70cc026c6f645428a698d33d39e013aaeda4cc04",
+                "sha256:3becdb380d8916c873ad512f1701f8a92ce79ec6978ffde92919fd18d41da7fb",
+                "sha256:4ae38bf8ba6f39d5b83f78661273216e7db5b00f08be7592062cb1fc8b8ba542",
+                "sha256:8047da932432aa32c515ec1447ea79ce578d0559362ca3605f8e9568f844e3c6",
+                "sha256:8f1c00aa35f504197561060ca4c21d3cc079ba29cf6dd2fe61024c70160c990b",
+                "sha256:922a69fa533cb0c793b483becaaa0845f655151e7256ec73630a1b2e9ebcb660",
+                "sha256:9693f35162dc6208d10b10ddf0458cc09ad70c30ba689d9206e02cd836ce28a3",
+                "sha256:a0f1c7edf116a12f7245be06120b1852275f9506a7d90227648b250755a03923",
+                "sha256:a36e75df6c767cbf46f61a91c70b3ba71811dfa0aca4a324d9407a06a8b7a2e7",
+                "sha256:aba5c812f8ee8a3ff3be51887ca2d55fb8e268439ed44110d3846e4229eb0e8b",
+                "sha256:ad6f1796e37db2223d2a3f302f586f74c72c630b48a9872c1e7ae8e92e0ab669",
+                "sha256:ae67501c95606072aafa865b6ed47343ac6484472a2f95490ba151f6347acfc2",
+                "sha256:b2fcf9402fde2672545b139694284dc3b665fd1be660d73eca6805197ef776a3",
+                "sha256:b52b88021b9541a60531142b0a451baca08d28b74a723d0c99b13c8c8d48d604",
+                "sha256:b7d336912853d7b77f9b2c24eeed6a5065d0a0cc0d3b6a5a45ad6d1d05fb8cd8",
+                "sha256:bd9ba4f332cf57b2c1f698be0728c020399ef3040577cde2939f2e045b39c1e5",
+                "sha256:be9be735f827820a06340dff2ddea1fb7234561fa5e6300a62fe7f54d40546a0",
+                "sha256:cca7741c0fcc765568350cb139e92b7f9f3c9a08c4f32591d18ab0a6ac9e71b6",
+                "sha256:d0d19fb2441947b58fbf91336638c2b9f4cc98e05e1045404d7a4cb7cddc7a65",
+                "sha256:e02794ac791662a5eafc6ffeaf9bcc149035a0e48eb0a9d40a8feb4622605a3d",
+                "sha256:e0f30db709c939cabf64a6dc5babb276e6d823fd84464ab916f9b9ba5623ca15",
+                "sha256:e92c2d33858c8f560671b448205a268096e17870dcf60a9bb3ac7bfbafb7f5f9"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==2.1.6"
         }
     },
     "develop": {}
diff --git a/requirements.txt b/requirements.txt
index 2e8cd4b..67c55f3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,33 +1,41 @@
+#
+# These requirements were autogenerated by pipenv
+# To regenerate from the project's Pipfile, run:
+#
+#    pipenv lock --requirements
+#
+
+-i https://pypi.org/simple/
 alabaster==0.7.12
 argh==0.26.2
-Babel==2.8.0
-certifi==2020.6.20
-chardet==3.0.4
-docutils==0.16
-idna==2.10
-imagesize==1.2.0
-Jinja2==2.11.2
+babel==2.9.1
+certifi==2021.10.8
+charset-normalizer==2.0.7; python_version >= '3'
+docutils==0.17.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+idna==3.3; python_version >= '3'
+imagesize==1.2.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+jinja2==3.0.2; python_version >= '3.6'
 jsx-lexer==0.0.8
-livereload==2.6.2
-MarkupSafe==1.1.1
-packaging==20.4
+livereload==2.6.3
+markupsafe==2.0.1; python_version >= '3.6'
+packaging==21.0; python_version >= '3.6'
 pathtools==0.1.2
 port-for==0.3.1
-Pygments==2.6.1
-pyparsing==2.4.7
-pytz==2020.1
-PyYAML==5.3.1
-requests==2.24.0
-six==1.15.0
-snowballstemmer==2.0.0
-Sphinx==3.1.1
+pygments==2.10.0; python_version >= '3.5'
+pyparsing==2.4.7; python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'
+pytz==2021.3
+pyyaml==6.0; python_version >= '3.6'
+requests==2.26.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'
+six==1.16.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+snowballstemmer==2.1.0
 sphinx-autobuild==0.7.1
-sphinxcontrib-applehelp==1.0.2
-sphinxcontrib-devhelp==1.0.2
-sphinxcontrib-htmlhelp==1.0.3
-sphinxcontrib-jsmath==1.0.1
-sphinxcontrib-qthelp==1.0.3
-sphinxcontrib-serializinghtml==1.1.4
-tornado==6.0.4
-urllib3==1.25.9
-watchdog==0.10.3
+sphinx==3.1.1
+sphinxcontrib-applehelp==1.0.2; python_version >= '3.5'
+sphinxcontrib-devhelp==1.0.2; python_version >= '3.5'
+sphinxcontrib-htmlhelp==2.0.0; python_version >= '3.6'
+sphinxcontrib-jsmath==1.0.1; python_version >= '3.5'
+sphinxcontrib-qthelp==1.0.3; python_version >= '3.5'
+sphinxcontrib-serializinghtml==1.1.5; python_version >= '3.5'
+tornado==6.1; python_version >= '3.5'
+urllib3==1.26.7; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'
+watchdog==2.1.6; python_version >= '3.6'