add atomicwrites to pipenv

- Add atomicwrites to fix windows build
- Regenerate requirements.txt

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "ca2480c022550256516d1869810045c77290f8fb6dbbda65474c27f28de9d182"
+            "sha256": "ef9a71350a18ce8bacfa3cdfb4cb9b55873aceb53e78ca000804273af2652d15"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -39,6 +39,14 @@
             ],
             "version": "==3.0.1"
         },
+        "atomicwrites": {
+            "hashes": [
+                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
+                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
+            ],
+            "index": "pypi",
+            "version": "==1.3.0"
+        },
         "attrs": {
             "hashes": [
                 "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",