Scheduled weekly dependency update for week 49 (#113)

* Update idna from 2.7 to 2.8

* Update requests from 2.20.1 to 2.21.0

* Update six from 1.11.0 to 1.12.0

* Update mypy from 0.641 to 0.650

Pipfile.lock

@@ -46,10 +46,10 @@
         },
         "idna": {
             "hashes": [
-                "sha256:156a6814fb5ac1fc6850fb002e0852d56c0c8d2531923a51032d1b70760e186e",
-                "sha256:684a38a6f903c1d71d6d5fac066b58d7768af4de2b832e426ec79c30daa94a16"
+                "sha256:ea8b7f6188e6fa117537c3df7da9fc686d485087abf6ac197f9c46432f7e4a3c",
+                "sha256:c357b3f628cf53ae2c4c05627ecc484553142ca23264e593d327bcde5e9c3407"
             ],
-            "version": "==2.7"
+            "version": "==2.8"
         },
         "more-itertools": {
             "hashes": [
@@ -143,10 +143,10 @@
         },
         "requests": {
             "hashes": [
-                "sha256:65b3a120e4329e33c9889db89c80976c5272f56ea92d3e74da8a463992e3ff54",
-                "sha256:ea881206e59f41dbd0bd445437d792e43906703fff75ca8ff43ccdb11f33f263"
+                "sha256:7bf2a778576d825600030a110f3c0e3e8edc51dfaafe1c146e39a2027784957b",
+                "sha256:502a824f31acdacb3a35b6690b5fbf0bc41d63a24a45c4004352b0242707598e"
             ],
-            "version": "==2.20.1"
+            "version": "==2.21.0"
         },
         "selenium": {
             "hashes": [
@@ -157,10 +157,10 @@
         },
         "six": {
             "hashes": [
-                "sha256:70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9",
-                "sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb"
+                "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
+                "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
             ],
-            "version": "==1.11.0"
+            "version": "==1.12.0"
         },
         "urllib3": {
             "hashes": [
@@ -309,11 +309,10 @@
         },
         "mypy": {
             "hashes": [
-                "sha256:8e071ec32cc226e948a34bbb3d196eb0fd96f3ac69b6843a5aff9bd4efa14455",
-                "sha256:fb90c804b84cfd8133d3ddfbd630252694d11ccc1eb0166a1b2efb5da37ecab2"
+                "sha256:12d965c9c4e8a625673aec493162cf390e66de12ef176b1f4821ac00d55f3ab3",
+                "sha256:38d5b5f835a81817dcc0af8d155bce4e9aefa03794fe32ed154d6612e83feafa"
             ],
-            "index": "pypi",
-            "version": "==0.641"
+            "version": "==0.650"
         },
         "mypy-extensions": {
             "hashes": [