python 3.7 & pipenv update

Pipfile

@@ -15,4 +15,4 @@ GitPython = "*"
 djangorestframework = "*"
 
 [requires]
-python_version = "3.6"
+python_version = "3.7"

Pipfile.lock

 {
     "_meta": {
         "hash": {
-            "sha256": "5be37f56fd74d155101f4acba6c915a939da8504055024743fd47e77a1c3dfce"
+            "sha256": "1f322b5fa702415088922c7453b87578ba6ba6a5c0430d5cc6562f815c3ce170"
         },
         "pipfile-spec": 6,
         "requires": {
-            "python_version": "3.6"
+            "python_version": "3.7"
         },
         "sources": [
             {
@@ -18,10 +18,10 @@
     "default": {
         "certifi": {
             "hashes": [
-                "sha256:376690d6f16d32f9d1fe8932551d80b23e9d393a8578c5633a2ed39a64861638",
-                "sha256:456048c7e371c089d0a77a5212fb37a2c2dce1e24146e3b7e0261736aaeaa22a"
+                "sha256:339dc09518b07e2fa7eda5450740925974815557727d6bd35d319c1524a04a4c",
+                "sha256:6d58c986d22b038c8c0df30d639f23a3e6d172a05c3583e766f4c0b785c0986a"
             ],
-            "version": "==2018.8.24"
+            "version": "==2018.10.15"
         },
         "chardet": {
             "hashes": [
@@ -32,11 +32,11 @@
         },
         "django": {
             "hashes": [
-                "sha256:04f2e423f2e60943c02bd2959174b844f7d1bcd19eabb7f8e4282999958021fd",
-                "sha256:e1cc1cd6b658aa4e052f5f2b148bfda08091d7c3558529708342e37e4e33f72c"
+                "sha256:acdcc1f61fdb0a0c82a1d3bf1879a414e7732ea894a7632af7f6d66ec7ab5bb3",
+                "sha256:efbcad7ebb47daafbcead109b38a5bd519a3c3cd92c6ed0f691ff97fcdd16b45"
             ],
             "index": "pypi",
-            "version": "==2.1.1"
+            "version": "==2.1.2"
         },
         "django-autoslug-iplweb": {
             "hashes": [
@@ -76,10 +76,10 @@
         },
         "gitdb2": {
             "hashes": [
-                "sha256:87783b7f4a8f6b71c7fe81d32179b3c8781c1a7d6fa0c69bff2f315b00aff4f8",
-                "sha256:bb4c85b8a58531c51373c89f92163b92f30f81369605a67cd52d1fc21246c044"
+                "sha256:83361131a1836661a155172932a13c08bda2db3674e4caa32368aa6eb02f38c2",
+                "sha256:e3a0141c5f2a3f635c7209d56c496ebe1ad35da82fe4d3ec4aaa36278d70648a"
             ],
-            "version": "==2.0.4"
+            "version": "==2.0.5"
         },
         "gitpython": {
             "hashes": [
@@ -121,17 +121,16 @@
         },
         "smmap2": {
             "hashes": [
-                "sha256:0dd53d991af487f9b22774fa89451358da3607c02b9b886a54736c6a313ece0b",
-                "sha256:dc216005e529d57007ace27048eb336dcecb7fc413cfb3b2f402bb25972b69c6"
+                "sha256:0555a7bf4df71d1ef4218e4807bbf9b201f910174e6e08af2e138d4e517b4dde",
+                "sha256:29a9ffa0497e7f2be94ca0ed1ca1aa3cd4cf25a1f6b4f5f87f74b46ed91d609a"
             ],
-            "version": "==2.0.4"
+            "version": "==2.0.5"
         },
         "urllib3": {
             "hashes": [
                 "sha256:a68ac5e15e76e7e5dd2b8f94007233e01effe3e50e8daddf69acfd81cb686baf",
                 "sha256:b5725a0bd4ba422ab0e66e89e030c806576753ea3ee08554382c14e685d117b5"
             ],
-            "markers": "python_version != '3.2.*' and python_version != '3.0.*' and python_version != '3.1.*' and python_version != '3.3.*' and python_version < '4' and python_version >= '2.6'",
             "version": "==1.23"
         }
     },