diff --git a/Pipfile.lock b/Pipfile.lock
index 5e90e58..3bc5bdb 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -16,13 +16,6 @@
         ]
     },
     "default": {
-        "argh": {
-            "hashes": [
-                "sha256:a9b3aaa1904eeb78e32394cd46c6f37ac0fb4af6dc488daa58971bdc7d7fcaf3",
-                "sha256:e9535b8c84dc9571a48999094fda7f33e63c3f1b74f3e5f3ac0105a58405bb65"
-            ],
-            "version": "==0.26.2"
-        },
         "cov-core": {
             "hashes": [
                 "sha256:4a14c67d520fda9d42b0da6134638578caae1d374b9bb462d8de00587dba764c"
@@ -31,40 +24,50 @@
         },
         "coverage": {
             "hashes": [
-                "sha256:08907593569fe59baca0bf152c43f3863201efb6113ecb38ce7e97ce339805a6",
-                "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"
+                "sha256:1245ab82e8554fa88c4b2ab1e098ae051faac5af829efdcf2ce6b34dccd5567c",
+                "sha256:1bc6d709939ff262fd1432f03f080c5042dc6508b6e0d3d20e61dd045456a1a0",
+                "sha256:25e73d4c81efa8ea3785274a2f7f3bfbbeccb6fcba2a0bdd3be9223371c37554",
+                "sha256:276b13cc085474e482566c477c25ed66a097b44c6e77132f3304ac0b039f83eb",
+                "sha256:2aed4761809640f02e44e16b8b32c1a5dee5e80ea30a0ff0912158bde9c501f2",
+                "sha256:2dd70a167843b4b4b2630c0c56f1b586fe965b4f8ac5da05b6690344fd065c6b",
+                "sha256:352c68e233409c31048a3725c446a9e48bbff36e39db92774d4f2380d630d8f8",
+                "sha256:3f2b05757c92ad96b33dbf8e8ec8d4ccb9af6ae3c9e9bd141c7cc44d20c6bcba",
+                "sha256:448d7bde7ceb6c69e08474c2ddbc5b4cd13c9e4aa4a717467f716b5fc938a734",
+                "sha256:463e52616ea687fd323888e86bf25e864a3cc6335a043fad6bbb037dbf49bbe2",
+                "sha256:482fb42eea6164894ff82abbcf33d526362de5d1a7ed25af7ecbdddd28fc124f",
+                "sha256:56c4a409381ddd7bbff134e9756077860d4e8a583d310a6f38a2315b9ce301d0",
+                "sha256:56d296cbc8254a7dffdd7bcc2eb70be5a233aae7c01856d2d936f5ac4e8ac1f1",
+                "sha256:5e15d424b8153756b7c903bde6d4610be0c3daca3986173c18dd5c1a1625e4cd",
+                "sha256:618eeba986cea7f621d8607ee378ecc8c2504b98b3fdc4952b30fe3578304687",
+                "sha256:61d47a897c1e91f33f177c21de897267b38fbb45f2cd8e22a710bcef1df09ac1",
+                "sha256:621f6ea7260ea2ffdaec64fe5cb521669984f567b66f62f81445221d4754df4c",
+                "sha256:6a5cdc3adb4f8bb8d8f5e64c2e9e282bc12980ef055ec6da59db562ee9bdfefa",
+                "sha256:6c3f6158b02ac403868eea390930ae64e9a9a2a5bbfafefbb920d29258d9f2f8",
+                "sha256:704f89b87c4f4737da2860695a18c852b78ec7279b24eedacab10b29067d3a38",
+                "sha256:72128176fea72012063200b7b395ed8a57849282b207321124d7ff14e26988e8",
+                "sha256:78fbb2be068a13a5d99dce9e1e7d168db880870f7bc73f876152130575bd6167",
+                "sha256:7bff3a98f63b47464480de1b5bdd80c8fade0ba2832c9381253c9b74c4153c27",
+                "sha256:84f2436d6742c01136dd940ee158bfc7cf5ced3da7e4c949662b8703b5cd8145",
+                "sha256:9976fb0a5709988778ac9bc44f3d50fccd989987876dfd7716dee28beed0a9fa",
+                "sha256:9ad0a117b8dc2061ce9461ea4c1b4799e55edceb236522c5b8f958ce9ed8fa9a",
+                "sha256:9e3dd806f34de38d4c01416344e98eab2437ac450b3ae39c62a0ede2f8b5e4ed",
+                "sha256:9eb494070aa060ceba6e4bbf44c1bc5fa97bfb883a0d9b0c9049415f9e944793",
+                "sha256:9fde6b90889522c220dd56a670102ceef24955d994ff7af2cb786b4ba8fe11e4",
+                "sha256:9fff3ff052922cb99f9e52f63f985d4f7a54f6b94287463bc66b7cdf3eb41217",
+                "sha256:a06c358f4aed05fa1099c39decc8022261bb07dfadc127c08cfbd1391b09689e",
+                "sha256:a4f923b9ab265136e57cc14794a15b9dcea07a9c578609cd5dbbfff28a0d15e6",
+                "sha256:c5b81fb37db76ebea79aa963b76d96ff854e7662921ce742293463635a87a78d",
+                "sha256:d5ed164af5c9078596cfc40b078c3b337911190d3faeac830c3f1274f26b8320",
+                "sha256:d651fde74a4d3122e5562705824507e2f5b2d3d57557f1916c4b27635f8fbe3f",
+                "sha256:de73fca6fb403dd72d4da517cfc49fcf791f74eee697d3219f6be29adf5af6ce",
+                "sha256:e647a0be741edbb529a72644e999acb09f2ad60465f80757da183528941ff975",
+                "sha256:e92c7a5f7d62edff50f60a045dc9542bf939758c95b2fcd686175dd10ce0ed10",
+                "sha256:eeffd96882d8c06d31b65dddcf51db7c612547babc1c4c5db6a011abe9798525",
+                "sha256:f5a4551dfd09c3bd12fca8144d47fe7745275adf3229b7223c2f9e29a975ebda",
+                "sha256:fac0bcc5b7e8169bffa87f0dcc24435446d329cbc2b5486d155c2e0f3b493ae1"
             ],
-            "version": "==4.5.4"
+            "markers": "python_version >= '3.7'",
+            "version": "==6.3.1"
         },
         "dj-database-url": {
             "hashes": [
@@ -76,11 +79,11 @@
         },
         "django": {
             "hashes": [
-                "sha256:16a5d54411599780ac9dfe3b9b38f90f785c51259a584e0b24b6f14a7f69aae8",
-                "sha256:9a2f98211ab474c710fcdad29c82f30fc14ce9917c7a70c3682162a624de4035"
+                "sha256:1ee37046b0bf2b61e83b3a01d067323516ec3b6f2b17cd49b1326dd4ba9dc913",
+                "sha256:90763c764738586b11d7e1f44828032c153366e43ad7f782908193a1bb2d6d92"
             ],
             "index": "pypi",
-            "version": "==2.2.4"
+            "version": "==2.2.27"
         },
         "djangorestframework": {
             "hashes": [
@@ -100,16 +103,18 @@
         },
         "ghp-import": {
             "hashes": [
-                "sha256:3e924ea720e4e1f82d56753db2154bfb86067472c5830732159c3a4c4fbc75d7"
+                "sha256:5f8962b30b20652cdffa9c5a9812f7de6bcb56ec475acac579807719bf242c46",
+                "sha256:947b3771f11be850c852c64b561c600fdddf794bab363060854c1ee7ad05e071"
             ],
-            "version": "==0.5.5"
+            "version": "==2.0.2"
         },
         "jinja2": {
             "hashes": [
-                "sha256:065c4f02ebe7f7cf559e49ee5a95fb800a9e4528727aec6f24402a5374c65013",
-                "sha256:14dd6caf1527abb21f08f86c784eac40853ba93edb79552aa1e4b8aef1b61c7b"
+                "sha256:077ce6014f7b40d03b47d1f1ca4b0fc8328a692bd284016f806ed0eaca390ad8",
+                "sha256:611bb273cd68f3b993fabdc4064fc858c5b47a973cb5aa7999ec1ba405c87cd7"
             ],
-            "version": "==2.10.1"
+            "markers": "python_version >= '3.6'",
+            "version": "==3.0.3"
         },
         "markdown": {
             "hashes": [
@@ -120,43 +125,86 @@
         },
         "markupsafe": {
             "hashes": [
-                "sha256:00bc623926325b26bb9605ae9eae8a215691f33cae5df11ca5424f06f2d1f473",
-                "sha256:09027a7803a62ca78792ad89403b1b7a73a01c8cb65909cd876f7fcebd79b161",
-                "sha256:09c4b7f37d6c648cb13f9230d847adf22f8171b1ccc4d5682398e77f40309235",
-                "sha256:1027c282dad077d0bae18be6794e6b6b8c91d58ed8a8d89a89d59693b9131db5",
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-                "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b",
-                "sha256:43a55c2930bbc139570ac2452adf3d70cdbb3cfe5912c71cdce1c2c6bbd9c5d1",
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+                "sha256:99df47edb6bda1249d3e80fdabb1dab8c08ef3975f69aed437cb69d0a5de1e28",
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-            "version": "==1.1.1"
+            "markers": "python_version >= '3.6'",
+            "version": "==2.0.1"
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         "mccabe": {
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-            "version": "==0.6.1"
+            "markers": "python_version >= '3.6'",
+            "version": "==0.7.0"
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         "mkdocs": {
             "hashes": [
@@ -165,12 +213,6 @@
             "index": "pypi",
             "version": "==0.11.1"
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-        "pathtools": {
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                 "sha256:b22cfae5db09833bb9bd7c8463b53e1a9c9b39f12e304a8d0bba729c501827ee",
@@ -180,17 +222,19 @@
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+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==1.11.0"
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-                "sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2"
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-            "version": "==2.1.1"
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         "pytest": {
             "hashes": [
@@ -214,43 +258,104 @@
             "index": "pypi",
             "version": "==2.6"
         },
+        "python-dateutil": {
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-            "version": "==2019.2"
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