diff --git a/Makefile b/Makefile
index 3a3c982..94c4f33 100644
--- a/Makefile
+++ b/Makefile
@@ -27,8 +27,9 @@ test:	## Run project tests
 	docker-compose run --rm app pytest
 
 .PHONY: lint
-lint:  ## Linter project code.
+lint:  ## Linte project code.
 	isort .
 	black --fast --line-length=120 .
 	mypy --ignore-missing-imports the_app
 	flake8 --config .flake8 .
+
diff --git a/Pipfile.lock b/Pipfile.lock
index ad0cec8..091483e 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -54,10 +54,11 @@
         },
         "black": {
             "hashes": [
-                "sha256:1c02557aa099101b9d21496f8a914e9ed2222ef70336404eeeac8edba836fbea"
+                "sha256:0e80435b8a88f383c9149ae89d671eb2095b72344b0fe8a1d61d2ff5110ed173",
+                "sha256:9dc2042018ca10735366d944c2c12d9cad6dec74a3d5f679d09384ea185d9943"
             ],
             "index": "pypi",
-            "version": "==20.8b1"
+            "version": "==21.5b0"
         },
         "certifi": {
             "hashes": [
@@ -142,11 +143,11 @@
         },
         "flake8": {
             "hashes": [
-                "sha256:12d05ab02614b6aee8df7c36b97d1a3b2372761222b19b58621355e82acddcff",
-                "sha256:78873e372b12b093da7b5e5ed302e8ad9e988b38b063b61ad937f26ca58fc5f0"
+                "sha256:1aa8990be1e689d96c745c5682b687ea49f2e05a443aff1f8251092b0014e378",
+                "sha256:3b9f848952dddccf635be78098ca75010f073bfe14d2c6bda867154bea728d2a"
             ],
             "index": "pypi",
-            "version": "==3.9.0"
+            "version": "==3.9.1"
         },
         "greenlet": {
             "hashes": [
@@ -207,36 +208,39 @@
         },
         "httpcore": {
             "hashes": [
-                "sha256:37ae835fb370049b2030c3290e12ed298bf1473c41bb72ca4aa78681eba9b7c9",
-                "sha256:93e822cd16c32016b414b789aeff4e855d0ccbfc51df563ee34d4dbadbb3bcdc"
+                "sha256:52b7d9413f6f5592a667de9209d70d4d41aba3fb0540dd7c93475c78b85941e9",
+                "sha256:c16efbdf643e1b57bde0adc12c53b08645d7d92d6d345a3f71adfc2a083e7fd2"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==0.12.3"
+            "version": "==0.13.2"
         },
         "httptools": {
             "hashes": [
-                "sha256:0a4b1b2012b28e68306575ad14ad5e9120b34fccd02a81eb08838d7e3bbb48be",
-                "sha256:3592e854424ec94bd17dc3e0c96a64e459ec4147e6d53c0a42d0ebcef9cb9c5d",
-                "sha256:41b573cf33f64a8f8f3400d0a7faf48e1888582b6f6e02b82b9bd4f0bf7497ce",
-                "sha256:56b6393c6ac7abe632f2294da53f30d279130a92e8ae39d8d14ee2e1b05ad1f2",
-                "sha256:86c6acd66765a934e8730bf0e9dfaac6fdcf2a4334212bd4a0a1c78f16475ca6",
-                "sha256:96da81e1992be8ac2fd5597bf0283d832287e20cb3cfde8996d2b00356d4e17f",
-                "sha256:96eb359252aeed57ea5c7b3d79839aaa0382c9d3149f7d24dd7172b1bcecb009",
-                "sha256:a2719e1d7a84bb131c4f1e0cb79705034b48de6ae486eb5297a139d6a3296dce",
-                "sha256:ac0aa11e99454b6a66989aa2d44bca41d4e0f968e395a0a8f164b401fefe359a",
-                "sha256:bc3114b9edbca5a1eb7ae7db698c669eb53eb8afbbebdde116c174925260849c",
-                "sha256:fa3cd71e31436911a44620473e873a256851e1f53dee56669dae403ba41756a4",
-                "sha256:fea04e126014169384dee76a153d4573d90d0cbd1d12185da089f73c78390437"
+                "sha256:07659649fe6b3948b6490825f89abe5eb1cec79ebfaaa0b4bf30f3f33f3c2ba8",
+                "sha256:08b79e09114e6ab5c3dbf560bba2cb2257ea38cdaeaf99b7cb80d8f92622fcd9",
+                "sha256:1e35aa179b67086cc600a984924a88589b90793c9c1b260152ca4908786e09df",
+                "sha256:31629e1f1b89959f8c0927bad12184dc07977dcf71e24f4772934aa490aa199b",
+                "sha256:851026bd63ec0af7e7592890d97d15c92b62d9e17094353f19a52c8e2b33710a",
+                "sha256:8fcca4b7efe353b13a24017211334c57d055a6e132c7adffed13a10d28efca57",
+                "sha256:9abd788465aa46a0f288bd3a99e53edd184177d6379e2098fd6097bb359ad9d6",
+                "sha256:aebdf0bd7bf7c90ae6b3be458692bf6e9e5b610b501f9f74c7979015a51db4c4",
+                "sha256:bda99a5723e7eab355ce57435c70853fc137a65aebf2f1cd4d15d96e2956da7b",
+                "sha256:c1c63d860749841024951b0a78e4dec6f543d23751ef061d6ab60064c7b8b524",
+                "sha256:c4111a0a8a00eff1e495d43ea5230aaf64968a48ddba8ea2d5f982efae827404",
+                "sha256:dce59ee45dd6ee6c434346a5ac527c44014326f560866b4b2f414a692ee1aca8",
+                "sha256:f759717ca1b2ef498c67ba4169c2b33eecf943a89f5329abcff8b89d153eb500",
+                "sha256:fb7199b8fb0c50a22e77260bb59017e0c075fa80cb03bb2c8692de76e7bb7fe7",
+                "sha256:fbf7ecd31c39728f251b1c095fd27c84e4d21f60a1d079a0333472ff3ae59d34"
             ],
-            "version": "==0.1.1"
+            "version": "==0.1.2"
         },
         "httpx": {
             "hashes": [
-                "sha256:cc2a55188e4b25272d2bcd46379d300f632045de4377682aa98a8a6069d55967",
-                "sha256:d379653bd457e8257eb0df99cb94557e4aac441b7ba948e333be969298cac272"
+                "sha256:0a2651dd2b9d7662c70d12ada5c290abcf57373b9633515fe4baa9f62566086f",
+                "sha256:ad2e3db847be736edc4b272c4d5788790a7e5789ef132fc6b5fef8aeb9e9f6e0"
             ],
             "index": "pypi",
-            "version": "==0.17.1"
+            "version": "==0.18.1"
         },
         "idna": {
             "hashes": [
@@ -387,19 +391,19 @@
         },
         "pytest": {
             "hashes": [
-                "sha256:9d1edf9e7d0b84d72ea3dbcdfd22b35fb543a5e8f2a60092dd578936bf63d7f9",
-                "sha256:b574b57423e818210672e07ca1fa90aaf194a4f63f3ab909a2c67ebb22913839"
+                "sha256:50bcad0a0b9c5a72c8e4e7c9855a3ad496ca6a881a3641b4260605450772c54b",
+                "sha256:91ef2131a9bd6be8f76f1f08eac5c5317221d6ad1e143ae03894b862e8976890"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==6.2.2"
+            "version": "==6.2.4"
         },
         "pytest-asyncio": {
             "hashes": [
-                "sha256:2eae1e34f6c68fc0a9dc12d4bea190483843ff4708d24277c41568d6b6044f1d",
-                "sha256:9882c0c6b24429449f5f969a5158b528f39bde47dc32e85b9f0403965017e700"
+                "sha256:2564ceb9612bbd560d19ca4b41347b54e7835c2f792c504f698e05395ed63f6f",
+                "sha256:3042bcdf1c5d978f6b74d96a151c4cfb9dcece65006198389ccd7e6c60eb1eea"
             ],
             "index": "pypi",
-            "version": "==0.14.0"
+            "version": "==0.15.1"
         },
         "pytest-cov": {
             "hashes": [
@@ -411,10 +415,10 @@
         },
         "python-dotenv": {
             "hashes": [
-                "sha256:0c8d1b80d1a1e91717ea7d526178e3882732420b03f08afea0406db6402e220e",
-                "sha256:587825ed60b1711daea4832cf37524dfd404325b7db5e25ebe88c495c9f807a0"
+                "sha256:00aa34e92d992e9f8383730816359647f358f4a3be1ba45e5a5cefd27ee91544",
+                "sha256:b1ae5e9643d5ed987fc57cc2583021e38db531946518130777734f9589b3141f"
             ],
-            "version": "==0.15.0"
+            "version": "==0.17.1"
         },
         "pyyaml": {
             "hashes": [
@@ -452,49 +456,49 @@
         },
         "regex": {
             "hashes": [
-                "sha256:07ef35301b4484bce843831e7039a84e19d8d33b3f8b2f9aab86c376813d0139",
-                "sha256:13f50969028e81765ed2a1c5fcfdc246c245cf8d47986d5172e82ab1a0c42ee5",
-                "sha256:14de88eda0976020528efc92d0a1f8830e2fb0de2ae6005a6fc4e062553031fa",
-                "sha256:159fac1a4731409c830d32913f13f68346d6b8e39650ed5d704a9ce2f9ef9cb3",
-                "sha256:18e25e0afe1cf0f62781a150c1454b2113785401ba285c745acf10c8ca8917df",
-                "sha256:201e2619a77b21a7780580ab7b5ce43835e242d3e20fef50f66a8df0542e437f",
-                "sha256:360a01b5fa2ad35b3113ae0c07fb544ad180603fa3b1f074f52d98c1096fa15e",
-                "sha256:39c44532d0e4f1639a89e52355b949573e1e2c5116106a395642cbbae0ff9bcd",
-                "sha256:3d9356add82cff75413bec360c1eca3e58db4a9f5dafa1f19650958a81e3249d",
-                "sha256:3d9a7e215e02bd7646a91fb8bcba30bc55fd42a719d6b35cf80e5bae31d9134e",
-                "sha256:4651f839dbde0816798e698626af6a2469eee6d9964824bb5386091255a1694f",
-                "sha256:486a5f8e11e1f5bbfcad87f7c7745eb14796642323e7e1829a331f87a713daaa",
-                "sha256:4b8a1fb724904139149a43e172850f35aa6ea97fb0545244dc0b805e0154ed68",
-                "sha256:4c0788010a93ace8a174d73e7c6c9d3e6e3b7ad99a453c8ee8c975ddd9965643",
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-                "sha256:575a832e09d237ae5fedb825a7a5bc6a116090dd57d6417d4f3b75121c73e3be",
-                "sha256:5770a51180d85ea468234bc7987f5597803a4c3d7463e7323322fe4a1b181578",
-                "sha256:633497504e2a485a70a3268d4fc403fe3063a50a50eed1039083e9471ad0101c",
-                "sha256:63f3ca8451e5ff7133ffbec9eda641aeab2001be1a01878990f6c87e3c44b9d5",
-                "sha256:709f65bb2fa9825f09892617d01246002097f8f9b6dde8d1bb4083cf554701ba",
-                "sha256:808404898e9a765e4058bf3d7607d0629000e0a14a6782ccbb089296b76fa8fe",
-                "sha256:882f53afe31ef0425b405a3f601c0009b44206ea7f55ee1c606aad3cc213a52c",
-                "sha256:8bd4f91f3fb1c9b1380d6894bd5b4a519409135bec14c0c80151e58394a4e88a",
-                "sha256:8e65e3e4c6feadf6770e2ad89ad3deb524bcb03d8dc679f381d0568c024e0deb",
-                "sha256:976a54d44fd043d958a69b18705a910a8376196c6b6ee5f2596ffc11bff4420d",
-                "sha256:a0d04128e005142260de3733591ddf476e4902c0c23c1af237d9acf3c96e1b38",
-                "sha256:a0df9a0ad2aad49ea3c7f65edd2ffb3d5c59589b85992a6006354f6fb109bb18",
-                "sha256:a2ee026f4156789df8644d23ef423e6194fad0bc53575534101bb1de5d67e8ce",
-                "sha256:a59a2ee329b3de764b21495d78c92ab00b4ea79acef0f7ae8c1067f773570afa",
-                "sha256:b97ec5d299c10d96617cc851b2e0f81ba5d9d6248413cd374ef7f3a8871ee4a6",
-                "sha256:b98bc9db003f1079caf07b610377ed1ac2e2c11acc2bea4892e28cc5b509d8d5",
-                "sha256:b9d8d286c53fe0cbc6d20bf3d583cabcd1499d89034524e3b94c93a5ab85ca90",
-                "sha256:bcd945175c29a672f13fce13a11893556cd440e37c1b643d6eeab1988c8b209c",
-                "sha256:c66221e947d7207457f8b6f42b12f613b09efa9669f65a587a2a71f6a0e4d106",
-                "sha256:c782da0e45aff131f0bed6e66fbcfa589ff2862fc719b83a88640daa01a5aff7",
-                "sha256:cb4ee827857a5ad9b8ae34d3c8cc51151cb4a3fe082c12ec20ec73e63cc7c6f0",
-                "sha256:d47d359545b0ccad29d572ecd52c9da945de7cd6cf9c0cfcb0269f76d3555689",
-                "sha256:dc9963aacb7da5177e40874585d7407c0f93fb9d7518ec58b86e562f633f36cd",
-                "sha256:ea2f41445852c660ba7c3ebf7d70b3779b20d9ca8ba54485a17740db49f46932",
-                "sha256:f5d0c921c99297354cecc5a416ee4280bd3f20fd81b9fb671ca6be71499c3fdf",
-                "sha256:f85d6f41e34f6a2d1607e312820971872944f1661a73d33e1e82d35ea3305e14"
+                "sha256:01afaf2ec48e196ba91b37451aa353cb7eda77efe518e481707e0515025f0cd5",
+                "sha256:11d773d75fa650cd36f68d7ca936e3c7afaae41b863b8c387a22aaa78d3c5c79",
+                "sha256:18c071c3eb09c30a264879f0d310d37fe5d3a3111662438889ae2eb6fc570c31",
+                "sha256:1e1c20e29358165242928c2de1482fb2cf4ea54a6a6dea2bd7a0e0d8ee321500",
+                "sha256:281d2fd05555079448537fe108d79eb031b403dac622621c78944c235f3fcf11",
+                "sha256:314d66636c494ed9c148a42731b3834496cc9a2c4251b1661e40936814542b14",
+                "sha256:32e65442138b7b76dd8173ffa2cf67356b7bc1768851dded39a7a13bf9223da3",
+                "sha256:339456e7d8c06dd36a22e451d58ef72cef293112b559010db3d054d5560ef439",
+                "sha256:3916d08be28a1149fb97f7728fca1f7c15d309a9f9682d89d79db75d5e52091c",
+                "sha256:3a9cd17e6e5c7eb328517969e0cb0c3d31fd329298dd0c04af99ebf42e904f82",
+                "sha256:47bf5bf60cf04d72bf6055ae5927a0bd9016096bf3d742fa50d9bf9f45aa0711",
+                "sha256:4c46e22a0933dd783467cf32b3516299fb98cfebd895817d685130cc50cd1093",
+                "sha256:4c557a7b470908b1712fe27fb1ef20772b78079808c87d20a90d051660b1d69a",
+                "sha256:52ba3d3f9b942c49d7e4bc105bb28551c44065f139a65062ab7912bef10c9afb",
+                "sha256:563085e55b0d4fb8f746f6a335893bda5c2cef43b2f0258fe1020ab1dd874df8",
+                "sha256:598585c9f0af8374c28edd609eb291b5726d7cbce16be6a8b95aa074d252ee17",
+                "sha256:619d71c59a78b84d7f18891fe914446d07edd48dc8328c8e149cbe0929b4e000",
+                "sha256:67bdb9702427ceddc6ef3dc382455e90f785af4c13d495f9626861763ee13f9d",
+                "sha256:6d1b01031dedf2503631d0903cb563743f397ccaf6607a5e3b19a3d76fc10480",
+                "sha256:741a9647fcf2e45f3a1cf0e24f5e17febf3efe8d4ba1281dcc3aa0459ef424dc",
+                "sha256:7c2a1af393fcc09e898beba5dd59196edaa3116191cc7257f9224beaed3e1aa0",
+                "sha256:7d9884d86dd4dd489e981d94a65cd30d6f07203d90e98f6f657f05170f6324c9",
+                "sha256:90f11ff637fe8798933fb29f5ae1148c978cccb0452005bf4c69e13db951e765",
+                "sha256:919859aa909429fb5aa9cf8807f6045592c85ef56fdd30a9a3747e513db2536e",
+                "sha256:96fcd1888ab4d03adfc9303a7b3c0bd78c5412b2bfbe76db5b56d9eae004907a",
+                "sha256:97f29f57d5b84e73fbaf99ab3e26134e6687348e95ef6b48cfd2c06807005a07",
+                "sha256:980d7be47c84979d9136328d882f67ec5e50008681d94ecc8afa8a65ed1f4a6f",
+                "sha256:a91aa8619b23b79bcbeb37abe286f2f408d2f2d6f29a17237afda55bb54e7aac",
+                "sha256:ade17eb5d643b7fead300a1641e9f45401c98eee23763e9ed66a43f92f20b4a7",
+                "sha256:b9c3db21af35e3b3c05764461b262d6f05bbca08a71a7849fd79d47ba7bc33ed",
+                "sha256:bd28bc2e3a772acbb07787c6308e00d9626ff89e3bfcdebe87fa5afbfdedf968",
+                "sha256:bf5824bfac591ddb2c1f0a5f4ab72da28994548c708d2191e3b87dd207eb3ad7",
+                "sha256:c0502c0fadef0d23b128605d69b58edb2c681c25d44574fc673b0e52dce71ee2",
+                "sha256:c38c71df845e2aabb7fb0b920d11a1b5ac8526005e533a8920aea97efb8ec6a4",
+                "sha256:ce15b6d103daff8e9fee13cf7f0add05245a05d866e73926c358e871221eae87",
+                "sha256:d3029c340cfbb3ac0a71798100ccc13b97dddf373a4ae56b6a72cf70dfd53bc8",
+                "sha256:e512d8ef5ad7b898cdb2d8ee1cb09a8339e4f8be706d27eaa180c2f177248a10",
+                "sha256:e8e5b509d5c2ff12f8418006d5a90e9436766133b564db0abaec92fd27fcee29",
+                "sha256:ee54ff27bf0afaf4c3b3a62bcd016c12c3fdb4ec4f413391a90bd38bc3624605",
+                "sha256:fa4537fb4a98fe8fde99626e4681cc644bdcf2a795038533f9f711513a862ae6",
+                "sha256:fd45ff9293d9274c5008a2054ecef86a9bfe819a67c7be1afb65e69b405b3042"
             ],
-            "version": "==2021.3.17"
+            "version": "==2021.4.4"
         },
         "rfc3986": {
             "extras": [
@@ -516,43 +520,43 @@
         },
         "sqlalchemy": {
             "hashes": [
-                "sha256:0096305b3e0912c59d8308f55d17544b3e5c1787f5ad8ef9cd75084136bcba9c",
-                "sha256:106fd3da313390dffe6ca156e5b7244293d6f4bfd389bcb315771c7addb5f3b3",
-                "sha256:1b30b71ea7c0f854d1b31549816694d8c435c9b5cce44da140b473544bb48a6b",
-                "sha256:228fe0cc700748ccc7a9a430896a77dfaa8a1035874e540961589e31f31cabe1",
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-                "sha256:3280c283e85e5c7b95c7be75b2df765d4bb13a01be36552826557bb4177d2bdf",
-                "sha256:33a2b756bd8f7022c24a16228071dea39cf6f21f62732a5307b6ebcef084bf16",
-                "sha256:409f3cd35f99592d0ceb1ee2e13c24b3083109e0f80096aae36000e5988aa24a",
-                "sha256:41a6dc66714c7dddf210dc8652d19bb2a55364c21038ca77312500014271aa67",
-                "sha256:4aa4de9bd3ae5e46f7395aa769303722e7174795ae83dd78302d849fcbc7513d",
-                "sha256:52c2512914bdeb3ce7957e2597b6a9d4a3dd3b3177c32ccf481908d6e59384ae",
-                "sha256:5da7f97893631d060c4590e531784f5eaf64bb3e6002804ee8a96d9c91cd1885",
-                "sha256:655b35725f1478bb6f797336acc803ddbb4c693816b3663a6fd94ad454eb056a",
-                "sha256:755aed46915e20c0b317a4124251f31682dcc7a43984d771352f6863ea11cd9c",
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@@ -572,46 +576,46 @@
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@@ -685,10 +689,10 @@
         },
         "asttokens": {
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@@ -707,17 +711,18 @@
         },
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-            "version": "==4.4.2"
+            "markers": "python_version >= '3.5'",
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         "executing": {
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@@ -729,11 +734,11 @@
         },
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@@ -750,13 +755,21 @@
             "markers": "python_version >= '3.6'",
             "version": "==0.18.0"
         },
+        "matplotlib-inline": {
+            "hashes": [
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+            "markers": "python_version >= '3.5'",
+            "version": "==0.1.2"
+        },
         "parso": {
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         },
         "pexpect": {
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@@ -790,19 +803,19 @@
         },
         "pygments": {
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-            "version": "==2.8.1"
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