diff --git a/Pipfile.lock b/Pipfile.lock
index 6a6709e..6fe9dc0 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -176,15 +176,17 @@
         },
         "uvloop": {
             "hashes": [
-                "sha256:0deb6c97c5807c792dd9024bab90e6ca49e981862103cb2ea37b430c1ca0a267",
-                "sha256:155b34d513655e753d07f499a7e811970e2d397f240dfcbec0b32a9587159c99",
-                "sha256:1df3ddfa280206e9999ae1c777a20836eb895bcec6dc9fae2cbb6eecfafb099e",
-                "sha256:5b19361c8767e1dc61f6367f948d4f3dc5504b9f2eba488641b3d26ec14498ba",
-                "sha256:942cd07035510b149d6160796f4e972137130ae953871b6a98c2cf5d5ab68c2e",
-                "sha256:c63b6c0bf33144c604dd72f7eecf2d3a3ac7405c503c67bd98128cf306efe18a",
-                "sha256:e698a20a3b4ccb380d207f9d491d4085d7c38d364f6a0bae98684a1612a9607a"
+                "sha256:182617c2992a79b268bfd193691c4aacb93634e9d8d96edf560a842a6206411d",
+                "sha256:2a0268553d2920108b05250c9711060313851daa60b1052c38b6520320aa50b1",
+                "sha256:32d2fe6ee6be28a99661e1f02bf6cedb99711df1065a3fb7ba7dd73ccb85f768",
+                "sha256:448b13a1adfc47745b880b5d5b34c975c7851b1cd3b0eafe2569b2250190c797",
+                "sha256:469e0e3b80f245ed32f054174e6a69e6a01715dbbb24eb917733fe5af09ad306",
+                "sha256:682fa2ab24a758831f531dca122f128373c3dd95a3c8885b5fd1c48775d0024f",
+                "sha256:9967fd537f3164607d153900aaae036e9a18015d8478f84406ba58b183f5abfc",
+                "sha256:9ab030794432c47b78199d3f268ac2c898ae85fb9f09e10ae03dd7af62904b0e",
+                "sha256:c1d55b6926d956a29cf5d7cc891004602ea7cd006b0b80354b9b3d973ca9027f"
             ],
-            "version": "==0.13.0"
+            "version": "==0.14.0rc1"
         },
         "websockets": {
             "hashes": [
@@ -219,10 +221,10 @@
         },
         "attrs": {
             "hashes": [
-                "sha256:ec20e7a4825331c1b5ebf261d111e16fa9612c1f7a5e1f884f12bd53a664dfd2",
-                "sha256:f913492e1663d3c36f502e5e9ba6cd13cf19d7fab50aa13239e420fef95e1396"
+                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
+                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
             ],
-            "version": "==19.2.0"
+            "version": "==19.3.0"
         },
         "backcall": {
             "hashes": [
@@ -279,10 +281,10 @@
         },
         "decorator": {
             "hashes": [
-                "sha256:86156361c50488b84a3f148056ea716ca587df2f0de1d34750d35c21312725de",
-                "sha256:f069f3a01830ca754ba5258fde2278454a0b5b79e0d7f5c13b3b97e57d4acff6"
+                "sha256:54c38050039232e1db4ad7375cfce6748d7b41c29e95a081c8a6d2c30364a2ce",
+                "sha256:5d19b92a3c8f7f101c8dd86afd86b0f061a8ce4540ab8cd401fa2542756bce6d"
             ],
-            "version": "==4.4.0"
+            "version": "==4.4.1"
         },
         "entrypoints": {
             "hashes": [
@@ -293,11 +295,11 @@
         },
         "flake8": {
             "hashes": [
-                "sha256:19241c1cbc971b9962473e4438a2ca19749a7dd002dd1a946eaba171b4114548",
-                "sha256:8e9dfa3cecb2400b3738a42c54c3043e821682b9c840b0448c0503f781130696"
+                "sha256:45681a117ecc81e870cbf1262835ae4af5e7a8b08e40b944a8a6e6b895914cfb",
+                "sha256:49356e766643ad15072a789a20915d3c91dc89fd313ccd71802303fd67e4deca"
             ],
             "index": "pypi",
-            "version": "==3.7.8"
+            "version": "==3.7.9"
         },
         "flake8-comprehensions": {
             "hashes": [
@@ -386,9 +388,10 @@
         },
         "mypy-extensions": {
             "hashes": [
-                "sha256:a161e3b917053de87dbe469987e173e49fb454eca10ef28b48b384538cc11458"
+                "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d",
+                "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"
             ],
-            "version": "==0.4.2"
+            "version": "==0.4.3"
         },
         "nose2": {
             "hashes": [
@@ -479,31 +482,36 @@
         },
         "typed-ast": {
             "hashes": [
+                "sha256:1170afa46a3799e18b4c977777ce137bb53c7485379d9706af8a59f2ea1aa161",
                 "sha256:18511a0b3e7922276346bcb47e2ef9f38fb90fd31cb9223eed42c85d1312344e",
                 "sha256:262c247a82d005e43b5b7f69aff746370538e176131c32dda9cb0f324d27141e",
                 "sha256:2b907eb046d049bcd9892e3076c7a6456c93a25bebfe554e931620c90e6a25b0",
                 "sha256:354c16e5babd09f5cb0ee000d54cfa38401d8b8891eefa878ac772f827181a3c",
+                "sha256:48e5b1e71f25cfdef98b013263a88d7145879fbb2d5185f2a0c79fa7ebbeae47",
                 "sha256:4e0b70c6fc4d010f8107726af5fd37921b666f5b31d9331f0bd24ad9a088e631",
                 "sha256:630968c5cdee51a11c05a30453f8cd65e0cc1d2ad0d9192819df9978984529f4",
                 "sha256:66480f95b8167c9c5c5c87f32cf437d585937970f3fc24386f313a4c97b44e34",
                 "sha256:71211d26ffd12d63a83e079ff258ac9d56a1376a25bc80b1cdcdf601b855b90b",
+                "sha256:7954560051331d003b4e2b3eb822d9dd2e376fa4f6d98fee32f452f52dd6ebb2",
+                "sha256:838997f4310012cf2e1ad3803bce2f3402e9ffb71ded61b5ee22617b3a7f6b6e",
                 "sha256:95bd11af7eafc16e829af2d3df510cecfd4387f6453355188342c3e79a2ec87a",
                 "sha256:bc6c7d3fa1325a0c6613512a093bc2a2a15aeec350451cbdf9e1d4bffe3e3233",
                 "sha256:cc34a6f5b426748a507dd5d1de4c1978f2eb5626d51326e43280941206c209e1",
                 "sha256:d755f03c1e4a51e9b24d899561fec4ccaf51f210d52abdf8c07ee2849b212a36",
                 "sha256:d7c45933b1bdfaf9f36c579671fec15d25b06c8398f113dab64c18ed1adda01d",
                 "sha256:d896919306dd0aa22d0132f62a1b78d11aaf4c9fc5b3410d3c666b818191630a",
+                "sha256:fdc1c9bbf79510b76408840e009ed65958feba92a88833cdceecff93ae8fff66",
                 "sha256:ffde2fbfad571af120fcbfbbc61c72469e72f550d676c3342492a9dfdefb8f12"
             ],
             "version": "==1.4.0"
         },
         "typing-extensions": {
             "hashes": [
-                "sha256:2ed632b30bb54fc3941c382decfd0ee4148f5c591651c9272473fea2c6397d95",
-                "sha256:b1edbbf0652660e32ae780ac9433f4231e7339c7f9a8057d0f042fcbcea49b87",
-                "sha256:d8179012ec2c620d3791ca6fe2bf7979d979acdbef1fca0bc56b37411db682ed"
+                "sha256:091ecc894d5e908ac75209f10d5b4f118fbdb2eb1ede6a63544054bb1edb41f2",
+                "sha256:910f4656f54de5993ad9304959ce9bb903f90aadc7c67a0bef07e678014e892d",
+                "sha256:cf8b63fedea4d89bab840ecbb93e75578af28f76f66c35889bd7065f5af88575"
             ],
-            "version": "==3.7.4"
+            "version": "==3.7.4.1"
         },
         "wcwidth": {
             "hashes": [