diff --git a/Pipfile.lock b/Pipfile.lock
index 59d771d..fa819fe 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -16,20 +16,12 @@
         ]
     },
     "default": {
-        "appnope": {
-            "hashes": [
-                "sha256:5b26757dc6f79a3b7dc9fab95359328d5747fcb2409d331ea66d0272b90ab2a0",
-                "sha256:8b995ffe925347a2138d7ac0fe77155e4311a0ea6d6da4f5128fe4b3cbe5ed71"
-            ],
-            "markers": "sys_platform == 'darwin'",
-            "version": "==0.1.0"
-        },
         "attrs": {
             "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
+                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
+                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
             ],
-            "version": "==19.1.0"
+            "version": "==19.3.0"
         },
         "backcall": {
             "hashes": [
@@ -40,17 +32,18 @@
         },
         "bleach": {
             "hashes": [
-                "sha256:213336e49e102af26d9cde77dd2d0397afabc5a6bf2fed985dc35b5d1e285a16",
-                "sha256:3fdf7f77adcf649c9911387df51254b813185e32b2c6619f690b593a617e19fa"
+                "sha256:44f69771e2ac81ff30d929d485b7f9919f3ad6d019b6b20c74f3b8687c3f70df",
+                "sha256:aa8b870d0f46965bac2c073a93444636b0e1ca74e9777e34f03dd494b8a59d48"
             ],
-            "version": "==3.1.0"
+            "index": "pypi",
+            "version": "==3.1.1"
         },
         "certifi": {
             "hashes": [
-                "sha256:046832c04d4e752f37383b628bc601a7ea7211496b4638f6514d0e5b9acc4939",
-                "sha256:945e3ba63a0b9f577b1395204e13c3a231f9bc0223888be653286534e5873695"
+                "sha256:017c25db2a153ce562900032d5bc68e9f191e44e9a0f762f373977de9df1fbb3",
+                "sha256:25b64c7da4cd7479594d035c08c2d809eb4aab3a26e5a990ea98cc450c320f1f"
             ],
-            "version": "==2019.6.16"
+            "version": "==2019.11.28"
         },
         "chardet": {
             "hashes": [
@@ -68,10 +61,10 @@
         },
         "decorator": {
             "hashes": [
-                "sha256:86156361c50488b84a3f148056ea716ca587df2f0de1d34750d35c21312725de",
-                "sha256:f069f3a01830ca754ba5258fde2278454a0b5b79e0d7f5c13b3b97e57d4acff6"
+                "sha256:54c38050039232e1db4ad7375cfce6748d7b41c29e95a081c8a6d2c30364a2ce",
+                "sha256:5d19b92a3c8f7f101c8dd86afd86b0f061a8ce4540ab8cd401fa2542756bce6d"
             ],
-            "version": "==4.4.0"
+            "version": "==4.4.1"
         },
         "defusedxml": {
             "hashes": [
@@ -89,10 +82,18 @@
         },
         "idna": {
             "hashes": [
-                "sha256:c357b3f628cf53ae2c4c05627ecc484553142ca23264e593d327bcde5e9c3407",
-                "sha256:ea8b7f6188e6fa117537c3df7da9fc686d485087abf6ac197f9c46432f7e4a3c"
+                "sha256:7588d1c14ae4c77d74036e8c22ff447b26d0fde8f007354fd48a7814db15b7cb",
+                "sha256:a068a21ceac8a4d63dbfd964670474107f541babbd2250d61922f029858365fa"
             ],
-            "version": "==2.8"
+            "version": "==2.9"
+        },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:06f5b3a99029c7134207dd882428a66992a9de2bef7c2b699b5641f9886c3302",
+                "sha256:b97607a1a18a5100839aec1dc26a1ea17ee0d93b20b0f008d80a5a050afb200b"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==1.5.0"
         },
         "ipykernel": {
             "hashes": [
@@ -104,11 +105,11 @@
         },
         "ipython": {
             "hashes": [
-                "sha256:54c5a8aa1eadd269ac210b96923688ccf01ebb2d0f21c18c3c717909583579a8",
-                "sha256:e840810029224b56cd0d9e7719dc3b39cf84d577f8ac686547c8ba7a06eeab26"
+                "sha256:d9459e7237e2e5858738ff9c3e26504b79899b58a6d49e574d352493d80684c6",
+                "sha256:f6689108b1734501d3b59c84427259fd5ac5141afe2e846cfa8598eb811886c9"
             ],
             "markers": "python_version >= '3.3'",
-            "version": "==7.5.0"
+            "version": "==7.12.0"
         },
         "ipython-genutils": {
             "hashes": [
@@ -119,31 +120,31 @@
         },
         "ipywidgets": {
             "hashes": [
-                "sha256:0f2b5cde9f272cb49d52f3f0889fdd1a7ae1e74f37b48dac35a83152780d2b7b",
-                "sha256:a3e224f430163f767047ab9a042fc55adbcab0c24bbe6cf9f306c4f89fdf0ba3"
+                "sha256:13ffeca438e0c0f91ae583dc22f50379b9d6b28390ac7be8b757140e9a771516",
+                "sha256:e945f6e02854a74994c596d9db83444a1850c01648f1574adf144fbbabe05c97"
             ],
-            "version": "==7.4.2"
+            "version": "==7.5.1"
         },
         "jedi": {
             "hashes": [
-                "sha256:2bb0603e3506f708e792c7f4ad8fc2a7a9d9c2d292a358fbbd58da531695595b",
-                "sha256:2c6bcd9545c7d6440951b12b44d373479bf18123a401a52025cf98563fbd826c"
+                "sha256:b4f4052551025c6b0b0b193b29a6ff7bdb74c52450631206c262aef9f7159ad2",
+                "sha256:d5c871cb9360b414f981e7072c52c33258d598305280fef91c6cae34739d65d5"
             ],
-            "version": "==0.13.3"
+            "version": "==0.16.0"
         },
         "jinja2": {
             "hashes": [
-                "sha256:065c4f02ebe7f7cf559e49ee5a95fb800a9e4528727aec6f24402a5374c65013",
-                "sha256:14dd6caf1527abb21f08f86c784eac40853ba93edb79552aa1e4b8aef1b61c7b"
+                "sha256:93187ffbc7808079673ef52771baa950426fd664d3aad1d0fa3e95644360e250",
+                "sha256:b0eaf100007721b5c16c1fc1eecb87409464edc10469ddc9a22a27a99123be49"
             ],
-            "version": "==2.10.1"
+            "version": "==2.11.1"
         },
         "jsonschema": {
             "hashes": [
-                "sha256:0c0a81564f181de3212efa2d17de1910f8732fa1b71c42266d983cd74304e20d",
-                "sha256:a5f6559964a3851f59040d3b961de5e68e70971afb88ba519d27e6a039efff1a"
+                "sha256:4e5b3cf8216f577bee9ce139cbe72eca3ea4f292ec60928ff24758ce626cd163",
+                "sha256:c8a85b28d377cc7737e46e2d9f2b4f44ee3c0e1deac6bf46ddefc7187d30797a"
             ],
-            "version": "==3.0.1"
+            "version": "==3.2.0"
         },
         "jupyter": {
             "hashes": [
@@ -156,29 +157,31 @@
         },
         "jupyter-client": {
             "hashes": [
-                "sha256:b5f9cb06105c1d2d30719db5ffb3ea67da60919fb68deaefa583deccd8813551",
-                "sha256:c44411eb1463ed77548bc2d5ec0d744c9b81c4a542d9637c7a52824e2121b987"
+                "sha256:1fac6e3be1e797aea33d5cd1cfa568ff1ee71e01180bc89f64b24ee274f1f126",
+                "sha256:ed2490c65f7e0987d1e7b2c4146371d58112489e558b3a835aefb86b7283f930"
             ],
-            "version": "==5.2.4"
+            "version": "==6.0.0"
         },
         "jupyter-console": {
             "hashes": [
-                "sha256:308ce876354924fb6c540b41d5d6d08acfc946984bf0c97777c1ddcb42e0b2f5",
-                "sha256:cc80a97a5c389cbd30252ffb5ce7cefd4b66bde98219edd16bf5cb6f84bb3568"
+                "sha256:6f6ead433b0534909df789ea64f0a14cdf9b6b2360757756f08182be4b9e431b",
+                "sha256:b392155112ec86a329df03b225749a0fa903aa80811e8eda55796a40b5e470d8"
             ],
-            "version": "==6.0.0"
+            "version": "==6.1.0"
         },
         "jupyter-core": {
             "hashes": [
-                "sha256:2c6e7c1e9f2ac45b5c2ceea5730bc9008d92fe59d0725eac57b04c0edfba24f7",
-                "sha256:f4fa22d6cf25f34807c995f22d2923693575c70f02557bcbfbe59bd5ec8d8b84"
+                "sha256:394fd5dd787e7c8861741880bdf8a00ce39f95de5d18e579c74b882522219e7e",
+                "sha256:a4ee613c060fe5697d913416fc9d553599c05e4492d58fac1192c9a6844abb21"
             ],
-            "version": "==4.5.0"
+            "version": "==4.6.3"
         },
         "kiwisolver": {
             "hashes": [
                 "sha256:05b5b061e09f60f56244adc885c4a7867da25ca387376b02c1efc29cc16bcd0f",
+                "sha256:210d8c39d01758d76c2b9a693567e1657ec661229bc32eac30761fa79b2474b0",
                 "sha256:26f4fbd6f5e1dabff70a9ba0d2c4bd30761086454aa30dddc5b52764ee4852b7",
+                "sha256:3b15d56a9cd40c52d7ab763ff0bc700edbb4e1a298dc43715ecccd605002cf11",
                 "sha256:3b2378ad387f49cbb328205bda569b9f87288d6bc1bf4cd683c34523a2341efe",
                 "sha256:400599c0fe58d21522cae0e8b22318e09d9729451b17ee61ba8e1e7c0346565c",
                 "sha256:47b8cb81a7d18dbaf4fed6a61c3cecdb5adec7b4ac292bddb0d016d57e8507d5",
@@ -187,16 +190,22 @@
                 "sha256:5a52e1b006bfa5be04fe4debbcdd2688432a9af4b207a3f429c74ad625022641",
                 "sha256:5c7ca4e449ac9f99b3b9d4693debb1d6d237d1542dd6a56b3305fe8a9620f883",
                 "sha256:682e54f0ce8f45981878756d7203fd01e188cc6c8b2c5e2cf03675390b4534d5",
+                "sha256:76275ee077772c8dde04fb6c5bc24b91af1bb3e7f4816fd1852f1495a64dad93",
                 "sha256:79bfb2f0bd7cbf9ea256612c9523367e5ec51d7cd616ae20ca2c90f575d839a2",
                 "sha256:7f4dd50874177d2bb060d74769210f3bce1af87a8c7cf5b37d032ebf94f0aca3",
                 "sha256:8944a16020c07b682df861207b7e0efcd2f46c7488619cb55f65882279119389",
                 "sha256:8aa7009437640beb2768bfd06da049bad0df85f47ff18426261acecd1cf00897",
+                "sha256:9105ce82dcc32c73eb53a04c869b6a4bc756b43e4385f76ea7943e827f529e4d",
+                "sha256:933df612c453928f1c6faa9236161a1d999a26cd40abf1dc5d7ebbc6dbfb8fca",
                 "sha256:939f36f21a8c571686eb491acfffa9c7f1ac345087281b412d63ea39ca14ec4a",
+                "sha256:9491578147849b93e70d7c1d23cb1229458f71fc79c51d52dce0809b2ca44eea",
                 "sha256:9733b7f64bd9f807832d673355f79703f81f0b3e52bfce420fc00d8cb28c6a6c",
                 "sha256:a02f6c3e229d0b7220bd74600e9351e18bc0c361b05f29adae0d10599ae0e326",
                 "sha256:a0c0a9f06872330d0dd31b45607197caab3c22777600e88031bfe66799e70bb0",
+                "sha256:aa716b9122307c50686356cfb47bfbc66541868078d0c801341df31dca1232a9",
                 "sha256:acc4df99308111585121db217681f1ce0eecb48d3a828a2f9bbf9773f4937e9e",
                 "sha256:b64916959e4ae0ac78af7c3e8cef4becee0c0e9694ad477b4c6b3a536de6a544",
+                "sha256:d22702cadb86b6fcba0e6b907d9f84a312db9cd6934ee728144ce3018e715ee1",
                 "sha256:d3fcf0819dc3fea58be1fd1ca390851bdb719a549850e708ed858503ff25d995",
                 "sha256:d52e3b1868a4e8fd18b5cb15055c76820df514e26aa84cc02f593d99fef6707f",
                 "sha256:db1a5d3cc4ae943d674718d6c47d2d82488ddd94b93b9e12d24aabdbfe48caee",
@@ -204,7 +213,8 @@
                 "sha256:e8bf074363ce2babeb4764d94f8e65efd22e6a7c74860a4f05a6947afc020ff2",
                 "sha256:f16814a4a96dc04bf1da7d53ee8d5b1d6decfc1a92a63349bb15d37b6a263dd9",
                 "sha256:f2b22153870ca5cf2ab9c940d7bc38e8e9089fa0f7e5856ea195e1cf4ff43d5a",
-                "sha256:f790f8b3dff3d53453de6a7b7ddd173d2e020fb160baff578d578065b108a05f"
+                "sha256:f790f8b3dff3d53453de6a7b7ddd173d2e020fb160baff578d578065b108a05f",
+                "sha256:fe51b79da0062f8e9d49ed0182a626a7dc7a0cbca0328f612c6ee5e4711c81e4"
             ],
             "version": "==1.1.0"
         },
@@ -214,13 +224,16 @@
                 "sha256:09027a7803a62ca78792ad89403b1b7a73a01c8cb65909cd876f7fcebd79b161",
                 "sha256:09c4b7f37d6c648cb13f9230d847adf22f8171b1ccc4d5682398e77f40309235",
                 "sha256:1027c282dad077d0bae18be6794e6b6b8c91d58ed8a8d89a89d59693b9131db5",
+                "sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42",
                 "sha256:24982cc2533820871eba85ba648cd53d8623687ff11cbb805be4ff7b4c971aff",
                 "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b",
                 "sha256:43a55c2930bbc139570ac2452adf3d70cdbb3cfe5912c71cdce1c2c6bbd9c5d1",
                 "sha256:46c99d2de99945ec5cb54f23c8cd5689f6d7177305ebff350a58ce5f8de1669e",
                 "sha256:500d4957e52ddc3351cabf489e79c91c17f6e0899158447047588650b5e69183",
                 "sha256:535f6fc4d397c1563d08b88e485c3496cf5784e927af890fb3c3aac7f933ec66",
+                "sha256:596510de112c685489095da617b5bcbbac7dd6384aeebeda4df6025d0256a81b",
                 "sha256:62fe6c95e3ec8a7fad637b7f3d372c15ec1caa01ab47926cfdf7a75b40e0eac1",
+                "sha256:6788b695d50a51edb699cb55e35487e430fa21f1ed838122d722e0ff0ac5ba15",
                 "sha256:6dd73240d2af64df90aa7c4e7481e23825ea70af4b4922f8ede5b9e35f78a3b1",
                 "sha256:717ba8fe3ae9cc0006d7c451f0bb265ee07739daf76355d06366154ee68d221e",
                 "sha256:79855e1c5b8da654cf486b830bd42c06e8780cea587384cf6545b7d9ac013a0b",
@@ -237,7 +250,9 @@
                 "sha256:ba59edeaa2fc6114428f1637ffff42da1e311e29382d81b339c1817d37ec93c6",
                 "sha256:c8716a48d94b06bb3b2524c2b77e055fb313aeb4ea620c8dd03a105574ba704f",
                 "sha256:cd5df75523866410809ca100dc9681e301e3c27567cf498077e8551b6d20e42f",
-                "sha256:e249096428b3ae81b08327a63a485ad0878de3fb939049038579ac0ef61e17e7"
+                "sha256:cdb132fc825c38e1aeec2c8aa9338310d29d337bebbd7baa06889d09a60a1fa2",
+                "sha256:e249096428b3ae81b08327a63a485ad0878de3fb939049038579ac0ef61e17e7",
+                "sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be"
             ],
             "version": "==1.1.1"
         },
@@ -265,24 +280,24 @@
         },
         "nbconvert": {
             "hashes": [
-                "sha256:138381baa41d83584459b5cfecfc38c800ccf1f37d9ddd0bd440783346a4c39c",
-                "sha256:4a978548d8383f6b2cfca4a3b0543afb77bc7cb5a96e8b424337ab58c12da9bc"
+                "sha256:21fb48e700b43e82ba0e3142421a659d7739b65568cc832a13976a77be16b523",
+                "sha256:f0d6ec03875f96df45aa13e21fd9b8450c42d7e1830418cccc008c0df725fcee"
             ],
-            "version": "==5.5.0"
+            "version": "==5.6.1"
         },
         "nbformat": {
             "hashes": [
-                "sha256:b9a0dbdbd45bb034f4f8893cafd6f652ea08c8c1674ba83f2dc55d3955743b0b",
-                "sha256:f7494ef0df60766b7cabe0a3651556345a963b74dbc16bc7c18479041170d402"
+                "sha256:562de41fc7f4f481b79ab5d683279bf3a168858268d4387b489b7b02be0b324a",
+                "sha256:f4bbbd8089bd346488f00af4ce2efb7f8310a74b2058040d075895429924678c"
             ],
-            "version": "==4.4.0"
+            "version": "==5.0.4"
         },
         "notebook": {
             "hashes": [
-                "sha256:573e0ae650c5d76b18b6e564ba6d21bf321d00847de1d215b418acb64f056eb8",
-                "sha256:f64fa6624d2323fbef6210a621817d6505a45d0d4a9367f1843b20a38a4666ee"
+                "sha256:3edc616c684214292994a3af05eaea4cc043f6b4247d830f3a2f209fa7639a80",
+                "sha256:47a9092975c9e7965ada00b9a20f0cf637d001db60d241d479f53c0be117ad48"
             ],
-            "version": "==5.7.8"
+            "version": "==6.0.3"
         },
         "numpy": {
             "hashes": [
@@ -347,18 +362,18 @@
         },
         "parso": {
             "hashes": [
-                "sha256:17cc2d7a945eb42c3569d4564cdf49bde221bc2b552af3eca9c1aad517dcdd33",
-                "sha256:2e9574cb12e7112a87253e14e2c380ce312060269d04bd018478a3c92ea9a376"
+                "sha256:56b2105a80e9c4df49de85e125feb6be69f49920e121406f15e7acde6c9dfc57",
+                "sha256:951af01f61e6dccd04159042a0706a31ad437864ec6e25d0d7a96a9fbb9b0095"
             ],
-            "version": "==0.4.0"
+            "version": "==0.6.1"
         },
         "pexpect": {
             "hashes": [
-                "sha256:2094eefdfcf37a1fdbfb9aa090862c1a4878e5c7e0e7e7088bdb511c558e5cd1",
-                "sha256:9e2c1fd0e6ee3a49b28f95d4b33bc389c89b20af6a1255906e90ff1262ce62eb"
+                "sha256:0b48a55dcb3c05f3329815901ea4fc1537514d6ba867a152b581d69ae3710937",
+                "sha256:fc65a43959d153d0114afe13997d439c22823a27cefceb5ff35c2178c6784c0c"
             ],
             "markers": "sys_platform != 'win32'",
-            "version": "==4.7.0"
+            "version": "==4.8.0"
         },
         "pickleshare": {
             "hashes": [
@@ -377,17 +392,16 @@
         },
         "prometheus-client": {
             "hashes": [
-                "sha256:ee0c90350595e4a9f36591f291e6f9933246ea67d7cd7d1d6139a9781b14eaae"
+                "sha256:71cd24a2b3eb335cb800c7159f423df1bd4dcd5171b234be15e3f31ec9f622da"
             ],
-            "version": "==0.7.0"
+            "version": "==0.7.1"
         },
         "prompt-toolkit": {
             "hashes": [
-                "sha256:11adf3389a996a6d45cc277580d0d53e8a5afd281d0c9ec71b28e6f121463780",
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+            "version": "==3.0.3"
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@@ -399,81 +413,84 @@
         },
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@@ -490,57 +507,57 @@
         },
         "six": {
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-            "version": "==0.8.2"
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-                "sha256:b694b3d9288dbd81685c5d2e7140b81365d46c29f5db4bc659de5aa6b98780f8"
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-            "version": "==4.3.2"
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-                "sha256:dbe59173209418ae49d485b87d1681aefa36252ee85884c31346debd19463232"
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@@ -551,10 +568,17 @@
         },
         "widgetsnbextension": {
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