Update mypy from 0.670 to 0.700 (#139)

Pipfile.lock

@@ -313,10 +313,19 @@
         },
         "mypy": {
             "hashes": [
-                "sha256:308c274eb8482fbf16006f549137ddc0d69e5a589465e37b99c4564414363ca7",
-                "sha256:e80fd6af34614a0e898a57f14296d0dacb584648f0339c2e000ddbf0f4cc2f8d"
+                "sha256:03261a04ace27250cf14f1301969e2cc36ad0343dd437e60007ce42f06ddbaff",
+                "sha256:6a7923e90dd8f8b8e762327e3a4dd814f0bc5581a627010f4e2ec72d906ada0f",
+                "sha256:6a7c2b16ff7dee1cd4a913641d6a8da0cd386be812524f41427ea25f8fe337a6",
+                "sha256:7480db0bc2bb473547c8d519ea549de9f9654170e6f5b34310094ebe5ee1c9dc",
+                "sha256:863774c896f2cdc62a0e2252e9ba7aaeb7da04c0296f47c82b125dce3437c580",
+                "sha256:9a990cf039891a83ee90f130256cc06d09c0793242ea38d0fe33fdc449507123",
+                "sha256:b03573d0cd8c051aa9ef7f47d564cf44bbc5e91e89a7a078b3ca904b3da8855a",
+                "sha256:b10b16d9aa7a01266f14260344fb25849ef0d508c512a916043f77987489aeff",
+                "sha256:b1eab82221c3cc94bf22152e701b3efc9d64f60fac4cab20969a0427e5a78261",
+                "sha256:e663d4424531dc99fb85c947df8a4a107442f53f20a4e0bcefaa1d21c87e1563",
+                "sha256:ffac30f3fa2c9e10118cbb0faa0b7da7edb6e3c24a4048a15446a1f3409884e3"
             ],
-            "version": "==0.670"
+            "version": "==0.700"
         },
         "mypy-extensions": {
             "hashes": [