diff --git a/Pipfile.lock b/Pipfile.lock
index 782cb56..055631c 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -16,13 +16,19 @@
         ]
     },
     "default": {
-        "appnope": {
+        "appdirs": {
             "hashes": [
-                "sha256:5b26757dc6f79a3b7dc9fab95359328d5747fcb2409d331ea66d0272b90ab2a0",
-                "sha256:8b995ffe925347a2138d7ac0fe77155e4311a0ea6d6da4f5128fe4b3cbe5ed71"
+                "sha256:9e5896d1372858f8dd3344faf4e5014d21849c756c8d5701f78f8a103b372d92",
+                "sha256:d8b24664561d0d34ddfaec54636d502d7cea6e29c3eaf68f3df6180863e2166e"
             ],
-            "markers": "sys_platform == 'darwin'",
-            "version": "==0.1.0"
+            "version": "==1.4.3"
+        },
+        "attrs": {
+            "hashes": [
+                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
+                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
+            ],
+            "version": "==19.3.0"
         },
         "backcall": {
             "hashes": [
@@ -33,18 +39,19 @@
         },
         "beautifulsoup4": {
             "hashes": [
-                "sha256:11a9a27b7d3bddc6d86f59fb76afb70e921a25ac2d6cc55b40d072bd68435a76",
-                "sha256:7015e76bf32f1f574636c4288399a6de66ce08fb7b2457f628a8d70c0fbabb11",
-                "sha256:808b6ac932dccb0a4126558f7dfdcf41710dd44a4ef497a0bb59a77f9f078e89"
+                "sha256:05fd825eb01c290877657a56df4c6e4c311b3965bda790c613a3d6fb01a5462a",
+                "sha256:9fbb4d6e48ecd30bcacc5b63b94088192dcda178513b2ae3c394229f8911b887",
+                "sha256:e1505eeed31b0f4ce2dbb3bc8eb256c04cc2b3b72af7d551a4ab6efd5cbe5dae"
             ],
-            "version": "==4.6.0"
+            "version": "==4.8.2"
         },
         "bleach": {
             "hashes": [
-                "sha256:b8fa79e91f96c2c2cd9fd1f9eda906efb1b88b483048978ba62fef680e962b34",
-                "sha256:eb7386f632349d10d9ce9d4a838b134d4731571851149f9cc2c05a9a837a9a44"
+                "sha256:cc8da25076a1fe56c3ac63671e2194458e0c4d9c7becfd52ca251650d517903c",
+                "sha256:e78e426105ac07026ba098f04de8abe9b6e3e98b5befbf89b51a5ef0a4292b03"
             ],
-            "version": "==2.1.3"
+            "index": "pypi",
+            "version": "==3.1.4"
         },
         "bs4": {
             "hashes": [
@@ -54,10 +61,10 @@
         },
         "certifi": {
             "hashes": [
-                "sha256:13e698f54293db9f89122b0581843a782ad0934a4fe0172d2a980ba77fc61bb7",
-                "sha256:9fa520c1bacfb634fa7af20a76bcbd3d5fb390481724c597da32c719a7dca4b0"
+                "sha256:017c25db2a153ce562900032d5bc68e9f191e44e9a0f762f373977de9df1fbb3",
+                "sha256:25b64c7da4cd7479594d035c08c2d809eb4aab3a26e5a990ea98cc450c320f1f"
             ],
-            "version": "==2018.4.16"
+            "version": "==2019.11.28"
         },
         "chardet": {
             "hashes": [
@@ -68,10 +75,10 @@
         },
         "cssselect": {
             "hashes": [
-                "sha256:066d8bc5229af09617e24b3ca4d52f1f9092d9e061931f4184cd572885c23204",
-                "sha256:3b5103e8789da9e936a68d993b70df732d06b8bb9a337a05ed4eb52c17ef7206"
+                "sha256:f612ee47b749c877ebae5bb77035d8f4202c6ad0f0fc1271b3c18ad6c4468ecf",
+                "sha256:f95f8dedd925fd8f54edb3d2dfb44c190d9d18512377d3c1e2388d16126879bc"
             ],
-            "version": "==1.0.3"
+            "version": "==1.1.0"
         },
         "cycler": {
             "hashes": [
@@ -82,17 +89,24 @@
         },
         "decorator": {
             "hashes": [
-                "sha256:2c51dff8ef3c447388fe5e4453d24a2bf128d3a4c32af3fabef1f01c6851ab82",
-                "sha256:c39efa13fbdeb4506c476c9b3babf6a718da943dab7811c206005a4a956c080c"
+                "sha256:41fa54c2a0cc4ba648be4fd43cff00aedf5b9465c9bf18d64325bc225f08f760",
+                "sha256:e3a62f0520172440ca0dcc823749319382e377f37f140a0b99ef45fecb84bfe7"
+            ],
+            "version": "==4.4.2"
+        },
+        "defusedxml": {
+            "hashes": [
+                "sha256:6687150770438374ab581bb7a1b327a847dd9c5749e396102de3fad4e8a3ef93",
+                "sha256:f684034d135af4c6cbb949b8a4d2ed61634515257a67299e5f940fbaa34377f5"
             ],
-            "version": "==4.3.0"
+            "version": "==0.6.0"
         },
         "entrypoints": {
             "hashes": [
-                "sha256:10ad569bb245e7e2ba425285b9fa3e8178a0dc92fc53b1e1c553805e15a8825b",
-                "sha256:d2d587dde06f99545fb13a383d2cd336a8ff1f359c5839ce3a64c917d10c029f"
+                "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19",
+                "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"
             ],
-            "version": "==0.2.3"
+            "version": "==0.3"
         },
         "et-xmlfile": {
             "hashes": [
@@ -102,16 +116,9 @@
         },
         "fake-useragent": {
             "hashes": [
-                "sha256:cc9b9ddcebc708b3deac846f5fccb16e37c02ee47435a4ec7132271dd96aec8c"
+                "sha256:c104998b750eb097eefc28ae28e92d66397598d2cf41a31aa45d5559ef1adf35"
             ],
-            "version": "==0.1.10"
-        },
-        "html5lib": {
-            "hashes": [
-                "sha256:20b159aa3badc9d5ee8f5c647e5efd02ed2a66ab8d354930bd9ff139fc1dc0a3",
-                "sha256:66cb0dcfdbbc4f9c3ba1a63fdb511ffdbd4f513b2b6d81b80cd26ce6b3fb3736"
-            ],
-            "version": "==1.0.1"
+            "version": "==0.1.11"
         },
         "idna": {
             "hashes": [
@@ -120,21 +127,28 @@
             ],
             "version": "==2.7"
         },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:2a688cbaa90e0cc587f1df48bdc97a6eadccdcd9c35fb3f976a09e3b5016d90f",
+                "sha256:34513a8a0c4962bc66d35b359558fd8a5e10cd472d37aec5f66858addef32c1e"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==1.6.0"
+        },
         "ipykernel": {
             "hashes": [
-                "sha256:395f020610e33ffa0b0c9c0cd1a1d927d51ab9aa9f30a7ae36bb0c908a33e89c",
-                "sha256:935941dba29d856eee34b8b5261d971bd5012547239ed73ddfff099143748c37",
-                "sha256:c091449dd0fad7710ddd9c4a06e8b9e15277da306590bc07a3a1afa6b4453c8f"
+                "sha256:37c65d2e2da3326e5cf114405df6d47d997b8a3eba99e2cc4b75833bf71a5e18",
+                "sha256:39746b5f7d847a23fae4eac893e63e3d9cc5f8c3a4797fcd3bfa8d1a296ec6ed"
             ],
-            "version": "==4.8.2"
+            "version": "==5.2.0"
         },
         "ipython": {
             "hashes": [
-                "sha256:a0c96853549b246991046f32d19db7140f5b1a644cc31f0dc1edc86713b7676f",
-                "sha256:eca537aa61592aca2fef4adea12af8e42f5c335004dfa80c78caf80e8b525e5c"
+                "sha256:ca478e52ae1f88da0102360e57e528b92f3ae4316aabac80a2cd7f7ab2efb48a",
+                "sha256:eb8d075de37f678424527b5ef6ea23f7b80240ca031c2dd6de5879d687a65333"
             ],
             "markers": "python_version >= '3.3'",
-            "version": "==6.4.0"
+            "version": "==7.13.0"
         },
         "ipython-genutils": {
             "hashes": [
@@ -145,38 +159,38 @@
         },
         "ipywidgets": {
             "hashes": [
-                "sha256:3ce93db970a94f06f38121da70757cdbcce884ecd14f79a4dd9bc49a47e0f33b",
-                "sha256:eeb188429070aa3ce16e5e6e744437614e8315b5097d6cf31b0e83fb7a5a6342"
+                "sha256:13ffeca438e0c0f91ae583dc22f50379b9d6b28390ac7be8b757140e9a771516",
+                "sha256:e945f6e02854a74994c596d9db83444a1850c01648f1574adf144fbbabe05c97"
             ],
-            "version": "==7.3.0"
+            "version": "==7.5.1"
         },
         "jdcal": {
             "hashes": [
-                "sha256:948fb8d079e63b4be7a69dd5f0cd618a0a57e80753de8248fd786a8a20658a07",
-                "sha256:ea0a5067c5f0f50ad4c7bdc80abad3d976604f6fb026b0b3a17a9d84bb9046c9"
+                "sha256:1abf1305fce18b4e8aa248cf8fe0c56ce2032392bc64bbd61b5dff2a19ec8bba",
+                "sha256:472872e096eb8df219c23f2689fc336668bdb43d194094b5cc1707e1640acfc8"
             ],
-            "version": "==1.4"
+            "version": "==1.4.1"
         },
         "jedi": {
             "hashes": [
-                "sha256:b409ed0f6913a701ed474a614a3bb46e6953639033e31f769ca7581da5bd1ec1",
-                "sha256:c254b135fb39ad76e78d4d8f92765ebc9bf92cbc76f49e97ade1d5f5121e1f6f"
+                "sha256:b4f4052551025c6b0b0b193b29a6ff7bdb74c52450631206c262aef9f7159ad2",
+                "sha256:d5c871cb9360b414f981e7072c52c33258d598305280fef91c6cae34739d65d5"
             ],
-            "version": "==0.12.1"
+            "version": "==0.16.0"
         },
         "jinja2": {
             "hashes": [
-                "sha256:74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd",
-                "sha256:f84be1bb0040caca4cea721fcbbbbd61f9be9464ca236387158b0feea01914a4"
+                "sha256:93187ffbc7808079673ef52771baa950426fd664d3aad1d0fa3e95644360e250",
+                "sha256:b0eaf100007721b5c16c1fc1eecb87409464edc10469ddc9a22a27a99123be49"
             ],
-            "version": "==2.10"
+            "version": "==2.11.1"
         },
         "jsonschema": {
             "hashes": [
-                "sha256:000e68abd33c972a5248544925a0cae7d1125f9bf6c58280d37546b946769a08",
-                "sha256:6ff5f3180870836cae40f06fa10419f557208175f13ad7bc26caa77beb1f6e02"
+                "sha256:4e5b3cf8216f577bee9ce139cbe72eca3ea4f292ec60928ff24758ce626cd163",
+                "sha256:c8a85b28d377cc7737e46e2d9f2b4f44ee3c0e1deac6bf46ddefc7187d30797a"
             ],
-            "version": "==2.6.0"
+            "version": "==3.2.0"
         },
         "jupyter": {
             "hashes": [
@@ -189,94 +203,136 @@
         },
         "jupyter-client": {
             "hashes": [
-                "sha256:27befcf0446b01e29853014d6a902dd101ad7d7f94e2252b1adca17c3466b761",
-                "sha256:59e6d791e22a8002ad0e80b78c6fd6deecab4f9e1b1aa1a22f4213de271b29ea"
+                "sha256:5724827aedb1948ed6ed15131372bc304a8d3ad9ac67ac19da7c95120d6b17e0",
+                "sha256:81c1c712de383bf6bf3dab6b407392b0d84d814c7bd0ce2c7035ead8b2ffea97"
             ],
-            "version": "==5.2.3"
+            "version": "==6.1.2"
         },
         "jupyter-console": {
             "hashes": [
-                "sha256:3f928b817fc82cda95e431eb4c2b5eb21be5c483c2b43f424761a966bb808094",
-                "sha256:545dedd3aaaa355148093c5609f0229aeb121b4852995c2accfa64fe3e0e55cd"
+                "sha256:6f6ead433b0534909df789ea64f0a14cdf9b6b2360757756f08182be4b9e431b",
+                "sha256:b392155112ec86a329df03b225749a0fa903aa80811e8eda55796a40b5e470d8"
             ],
-            "version": "==5.2.0"
+            "version": "==6.1.0"
         },
         "jupyter-core": {
             "hashes": [
-                "sha256:927d713ffa616ea11972534411544589976b2493fc7e09ad946e010aa7eb9970",
-                "sha256:ba70754aa680300306c699790128f6fbd8c306ee5927976cbe48adacf240c0b7"
+                "sha256:394fd5dd787e7c8861741880bdf8a00ce39f95de5d18e579c74b882522219e7e",
+                "sha256:a4ee613c060fe5697d913416fc9d553599c05e4492d58fac1192c9a6844abb21"
             ],
-            "version": "==4.4.0"
+            "version": "==4.6.3"
         },
         "kiwisolver": {
             "hashes": [
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+                "sha256:a02f6c3e229d0b7220bd74600e9351e18bc0c361b05f29adae0d10599ae0e326",
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+                "sha256:aa716b9122307c50686356cfb47bfbc66541868078d0c801341df31dca1232a9",
+                "sha256:acc4df99308111585121db217681f1ce0eecb48d3a828a2f9bbf9773f4937e9e",
+                "sha256:b64916959e4ae0ac78af7c3e8cef4becee0c0e9694ad477b4c6b3a536de6a544",
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@@ -308,31 +364,31 @@
         },
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@@ -408,142 +464,153 @@
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         "parse": {
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-            "version": "==0.3.1"
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+            "version": "==4.7.2"
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-            "version": "==4.3.1"
+            "version": "==1.9.0"
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         "requests": {
             "hashes": [
@@ -568,51 +635,61 @@
             ],
             "version": "==1.5.0"
         },
-        "simplegeneric": {
+        "six": {
             "hashes": [
-                "sha256:dc972e06094b9af5b855b3df4a646395e43d1c9d0d39ed345b7393560d0b9173"
+                "sha256:236bdbdce46e6e6a3d61a337c0f8b763ca1e8717c03b369e87a7ec7ce1319c0a",
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-            "version": "==0.8.1"
+            "version": "==1.14.0"
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-                "sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb"
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-            "version": "==1.11.0"
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-                "sha256:65011551baff97f5414c67018e908110693143cfbaeb16831b743fe7cad8b927"
+                "sha256:4804a774f802306a7d9af7322193c5390f1da0abb429e082a10ef1d46e6fb2c2",
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-            "version": "==0.8.1"
+            "version": "==0.8.3"
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         "testpath": {
             "hashes": [
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-                "sha256:0d5337839c788da5900df70f8e01015aec141aa3fe7936cb0d0a2953f7ac7609"
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-            "version": "==0.3.1"
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+                "sha256:c952975c8ba74f546ae6de2e226ab3cc3cc11ae47baf607459a6728585bb542a",
+                "sha256:c98232a3ac391f5faea6821b53db8db461157baa788f5d6222a193e9456e1740"
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+            "version": "==6.0.4"
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+        "tqdm": {
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-            "version": "==5.1"
+            "version": "==4.44.1"
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         "traitlets": {
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-                "sha256:c6cb5e6f57c5a9bdaa40fa71ce7b4af30298fbab9ece9815b5d995ab6217c7d9"
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-            "version": "==4.3.2"
+            "version": "==4.3.3"
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@@ -623,17 +700,17 @@
         },
         "w3lib": {
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-                "sha256:aaf7362464532b1036ab0092e2eee78e8fd7b56787baa9ed4967457b083d011b"
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-            "version": "==1.19.0"
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-                "sha256:f4ebe71925af7b40a864553f761ed559b43544f8f71746c2d756c7fe788ade7c"
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-            "version": "==0.1.7"
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@@ -644,36 +721,37 @@
         },
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+                "sha256:295359a2cc78736737dd88c343cd0747546b2174b5e1adc223824bcaf3e164cb",
+                "sha256:2db62a9142e88535038a6bcfea70ef9447696ea77891aebb730a333a51ed559a",
+                "sha256:3762791ab8b38948f0c4d281c8b2ddfa99b7e510e46bd8dfa942a5fff621068c",
+                "sha256:3db87421956f1b0779a7564915875ba774295cc86e81bc671631379371af1170",
+                "sha256:3ef56fcc7b1ff90de46ccd5a687bbd13a3180132268c4254fc0fa44ecf4fc422",
+                "sha256:4f9f7d28ce1d8f1295717c2c25b732c2bc0645db3215cf757551c392177d7cb8",
+                "sha256:5c01fd846263a75bc8a2b9542606927cfad57e7282965d96b93c387622487485",
+                "sha256:5c65d2da8c6bce0fca2528f69f44b2f977e06954c8512a952222cea50dad430f",
+                "sha256:751a556205d8245ff94aeef23546a1113b1dd4f6e4d102ded66c39b99c2ce6c8",
+                "sha256:7ff46d441db78241f4c6c27b3868c9ae71473fe03341340d2dfdbe8d79310acc",
+                "sha256:965889d9f0e2a75edd81a07592d0ced54daa5b0785f57dc429c378edbcffe779",
+                "sha256:9b248ba3dd8a03b1a10b19efe7d4f7fa41d158fdaa95e2cf65af5a7b95a4f989",
+                "sha256:9bef37ee224e104a413f0780e29adb3e514a5b698aabe0d969a6ba426b8435d1",
+                "sha256:c1ec8db4fac31850286b7cd3b9c0e1b944204668b8eb721674916d4e28744092",
+                "sha256:c8a116feafdb1f84607cb3b14aa1418424ae71fee131642fc568d21423b51824",
+                "sha256:ce85b06a10fc65e6143518b96d3dca27b081a740bae261c2fb20375801a9d56d",
+                "sha256:d705f8aeecdf3262379644e4b55107a3b55860eb812b673b28d0fbc347a60c55",
+                "sha256:e898a0863421650f0bebac8ba40840fc02258ef4714cb7e1fd76b6a6354bda36",
+                "sha256:f8a7bff6e8664afc4e6c28b983845c5bc14965030e3fb98789734d416af77c4b"
+            ],
+            "version": "==8.1"
         },
         "widgetsnbextension": {
             "hashes": [
-                "sha256:af7412053b646a5372278bf772714543acdd6e0ad87f18171ba6a0c9009e3114",
-                "sha256:c5280a62d293735cdadc7b8884e2affcfb0488420ee09963577f042359726392"
+                "sha256:079f87d87270bce047512400efd70238820751a11d2d8cb137a5a5bdbaf255c7",
+                "sha256:bd314f8ceb488571a5ffea6cc5b9fc6cba0adaf88a9d2386b93a489751938bcd"
             ],
-            "version": "==3.3.0"
+            "version": "==3.5.1"
         },
         "xlrd": {
             "hashes": [
@@ -682,6 +760,13 @@
             ],
             "index": "pypi",
             "version": "==1.1.0"
+        },
+        "zipp": {
+            "hashes": [
+                "sha256:aa36550ff0c0b7ef7fa639055d797116ee891440eac1a56f378e2d3179e0320b",
+                "sha256:c599e4d75c98f6798c509911d08a22e6c021d074469042177c8c86fb92eefd96"
+            ],
+            "version": "==3.1.0"
         }
     },
     "develop": {}