diff --git a/Pipfile.lock b/Pipfile.lock
index d7595d4..e854645 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -69,11 +69,11 @@
         },
         "attrs": {
             "hashes": [
-                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
-                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
+                "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
+                "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==20.3.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==21.2.0"
         },
         "beautifulsoup4": {
             "hashes": [
@@ -87,14 +87,23 @@
         "cffi": {
             "hashes": [
                 "sha256:005a36f41773e148deac64b08f233873a4d0c18b053d37da83f6af4d9087b813",
+                "sha256:04c468b622ed31d408fea2346bec5bbffba2cc44226302a0de1ade9f5ea3d373",
+                "sha256:06d7cd1abac2ffd92e65c0609661866709b4b2d82dd15f611e602b9b188b0b69",
+                "sha256:06db6321b7a68b2bd6df96d08a5adadc1fa0e8f419226e25b2a5fbf6ccc7350f",
                 "sha256:0857f0ae312d855239a55c81ef453ee8fd24136eaba8e87a2eceba644c0d4c06",
+                "sha256:0f861a89e0043afec2a51fd177a567005847973be86f709bbb044d7f42fc4e05",
                 "sha256:1071534bbbf8cbb31b498d5d9db0f274f2f7a865adca4ae429e147ba40f73dea",
                 "sha256:158d0d15119b4b7ff6b926536763dc0714313aa59e320ddf787502c70c4d4bee",
+                "sha256:1bf1ac1984eaa7675ca8d5745a8cb87ef7abecb5592178406e55858d411eadc0",
                 "sha256:1f436816fc868b098b0d63b8920de7d208c90a67212546d02f84fe78a9c26396",
+                "sha256:24a570cd11895b60829e941f2613a4f79df1a27344cbbb82164ef2e0116f09c7",
+                "sha256:24ec4ff2c5c0c8f9c6b87d5bb53555bf267e1e6f70e52e5a9740d32861d36b6f",
                 "sha256:2894f2df484ff56d717bead0a5c2abb6b9d2bf26d6960c4604d5c48bbc30ee73",
                 "sha256:29314480e958fd8aab22e4a58b355b629c59bf5f2ac2492b61e3dc06d8c7a315",
+                "sha256:293e7ea41280cb28c6fcaaa0b1aa1f533b8ce060b9e701d78511e1e6c4a1de76",
                 "sha256:34eff4b97f3d982fb93e2831e6750127d1355a923ebaeeb565407b3d2f8d41a1",
                 "sha256:35f27e6eb43380fa080dccf676dece30bef72e4a67617ffda586641cd4508d49",
+                "sha256:3c3f39fa737542161d8b0d680df2ec249334cd70a8f420f71c9304bd83c3cbed",
                 "sha256:3d3dd4c9e559eb172ecf00a2a7517e97d1e96de2a5e610bd9b68cea3925b4892",
                 "sha256:43e0b9d9e2c9e5d152946b9c5fe062c151614b262fda2e7b201204de0b99e482",
                 "sha256:48e1c69bbacfc3d932221851b39d49e81567a4d4aac3b21258d9c24578280058",
@@ -102,6 +111,7 @@
                 "sha256:58e3f59d583d413809d60779492342801d6e82fefb89c86a38e040c16883be53",
                 "sha256:5de7970188bb46b7bf9858eb6890aad302577a5f6f75091fd7cdd3ef13ef3045",
                 "sha256:65fa59693c62cf06e45ddbb822165394a288edce9e276647f0046e1ec26920f3",
+                "sha256:681d07b0d1e3c462dd15585ef5e33cb021321588bebd910124ef4f4fb71aef55",
                 "sha256:69e395c24fc60aad6bb4fa7e583698ea6cc684648e1ffb7fe85e3c1ca131a7d5",
                 "sha256:6c97d7350133666fbb5cf4abdc1178c812cb205dc6f41d174a7b0f18fb93337e",
                 "sha256:6e4714cc64f474e4d6e37cfff31a814b509a35cb17de4fb1999907575684479c",
@@ -119,8 +129,10 @@
                 "sha256:b85eb46a81787c50650f2392b9b4ef23e1f126313b9e0e9013b35c15e4288e2e",
                 "sha256:bb89f306e5da99f4d922728ddcd6f7fcebb3241fc40edebcb7284d7514741991",
                 "sha256:cbde590d4faaa07c72bf979734738f328d239913ba3e043b1e98fe9a39f8b2b6",
+                "sha256:cc5a8e069b9ebfa22e26d0e6b97d6f9781302fe7f4f2b8776c3e1daea35f1adc",
                 "sha256:cd2868886d547469123fadc46eac7ea5253ea7fcb139f12e1dfc2bbd406427d1",
                 "sha256:d42b11d692e11b6634f7613ad8df5d6d5f8875f5d48939520d351007b3c13406",
+                "sha256:df5052c5d867c1ea0b311fb7c3cd28b19df469c056f7fdcfe88c7473aa63e333",
                 "sha256:f2d45f97ab6bb54753eab54fffe75aaf3de4ff2341c9daee1987ee1837636f1d",
                 "sha256:fd78e5fee591709f32ef6edb9a015b4aa1a5022598e36227500c8f4e02328d9c"
             ],
@@ -139,19 +151,19 @@
                 "voice"
             ],
             "hashes": [
-                "sha256:3df148daf6fbcc7ab5b11042368a3cd5f7b730b62f09fb5d3cbceff59bcfbb12",
-                "sha256:ba8be99ff1b8c616f7b6dcb700460d0222b29d4c11048e74366954c465fdd05f"
+                "sha256:462cd0fe307aef8b29cbfa8dd613e548ae4b2cb581d46da9ac0d46fb6ea19408",
+                "sha256:c6f64db136de0e18e090f6752ea68bdd4ab0a61b82dfe7acecefa22d6477bb0c"
             ],
             "index": "pypi",
-            "version": "==1.6.0"
+            "version": "==1.7.3"
         },
         "idna": {
             "hashes": [
-                "sha256:5205d03e7bcbb919cc9c19885f9920d622ca52448306f2377daede5cf3faac16",
-                "sha256:c5b02147e01ea9920e6b0a3f1f7bb833612d507592c837a6c49552768f4054e1"
+                "sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a",
+                "sha256:467fbad99067910785144ce333826c71fb0e63a425657295239737f7ecd125f3"
             ],
-            "markers": "python_version >= '3.4'",
-            "version": "==3.1"
+            "markers": "python_version >= '3.5'",
+            "version": "==3.2"
         },
         "multidict": {
             "hashes": [
@@ -263,11 +275,11 @@
         },
         "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"
         },
         "soupsieve": {
             "hashes": [
@@ -279,11 +291,11 @@
         },
         "typing-extensions": {
             "hashes": [
-                "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918",
-                "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c",
-                "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"
+                "sha256:0ac0f89795dd19de6b97debb0c6af1c70987fd80a2d62d1958f7e56fcc31b497",
+                "sha256:50b6f157849174217d0656f99dc82fe932884fb250826c18350e159ec6cdf342",
+                "sha256:779383f6086d90c99ae41cf0ff39aac8a7937a9283ce0a414e5dd782f4c94a84"
             ],
-            "version": "==3.7.4.3"
+            "version": "==3.10.0.0"
         },
         "yarl": {
             "hashes": [
@@ -332,11 +344,11 @@
     "develop": {
         "astroid": {
             "hashes": [
-                "sha256:21d735aab248253531bb0f1e1e6d068f0ee23533e18ae8a6171ff892b98297cf",
-                "sha256:cfc35498ee64017be059ceffab0a25bedf7548ab76f2bea691c5565896e7128d"
+                "sha256:38b95085e9d92e2ca06cf8b35c12a74fa81da395a6f9e65803742e6509c05892",
+                "sha256:606b2911d10c3dcf35e58d2ee5c97360e8477d7b9f3efc3f24811c93e6fc2cd9"
             ],
-            "markers": "python_version >= '3.6'",
-            "version": "==2.5.1"
+            "markers": "python_version ~= '3.6'",
+            "version": "==2.6.2"
         },
         "autopep8": {
             "hashes": [
@@ -356,11 +368,11 @@
         },
         "isort": {
             "hashes": [
-                "sha256:0a943902919f65c5684ac4e0154b1ad4fac6dcaa5d9f3426b732f1c8b5419be6",
-                "sha256:2bb1680aad211e3c9944dbce1d4ba09a989f04e238296c87fe2139faa26d655d"
+                "sha256:83510593e07e433b77bd5bff0f6f607dbafa06d1a89022616f02d8b699cfcd56",
+                "sha256:8e2c107091cfec7286bc0f68a547d0ba4c094d460b732075b6fba674f1035c0c"
             ],
-            "markers": "python_version >= '3.6' and python_version < '4.0'",
-            "version": "==5.8.0"
+            "markers": "python_version < '4.0' and python_full_version >= '3.6.1'",
+            "version": "==5.9.1"
         },
         "lazy-object-proxy": {
             "hashes": [
@@ -407,19 +419,19 @@
         },
         "pyflakes": {
             "hashes": [
-                "sha256:910208209dcea632721cb58363d0f72913d9e8cf64dc6f8ae2e02a3609aba40d",
-                "sha256:e59fd8e750e588358f1b8885e5a4751203a0516e0ee6d34811089ac294c8806f"
+                "sha256:7893783d01b8a89811dd72d7dfd4d84ff098e5eed95cfa8905b22bbffe52efc3",
+                "sha256:f5bc8ecabc05bb9d291eb5203d6810b49040f6ff446a756326104746cc00c1db"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.3.0"
+            "version": "==2.3.1"
         },
         "pylint": {
             "hashes": [
-                "sha256:0e21d3b80b96740909d77206d741aa3ce0b06b41be375d92e1f3244a274c1f8a",
-                "sha256:d09b0b07ba06bcdff463958f53f23df25e740ecd81895f7d2699ec04bbd8dc3b"
+                "sha256:23a1dc8b30459d78e9ff25942c61bb936108ccbe29dd9e71c01dc8274961709a",
+                "sha256:5d46330e6b8886c31b5e3aba5ff48c10f4aa5e76cbf9002c6544306221e63fbc"
             ],
             "index": "pypi",
-            "version": "==2.7.2"
+            "version": "==2.9.3"
         },
         "toml": {
             "hashes": [