Support Python 3.7 and 3.8

Author: ekohl

README.rst

@@ -65,7 +65,7 @@ Otherwise pip will refuse to install ``git-up`` due to ``Access denied`` errors.
 Python version compatibility:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Python 2.7, 3.5 and 3.6 are supported :)
+Python 2.7, 3.5, 3.6, 3.7 and 3.8 are supported :)
 
 Options and Configuration
 -------------------------

azure-pipelines.yml

@@ -20,18 +20,27 @@ strategy:
     Python37:
       python.version: '3.7'
       imageName: 'ubuntu-16.04'
+    Python38:
+      python.version: '3.8'
+      imageName: 'ubuntu-16.04'
     Mac_Python27:
       python.version: '2.7'
       imageName: 'macos-10.13'
     Mac_Python37:
       python.version: '3.7'
       imageName: 'macos-10.13'
+    Mac_Python38:
+      python.version: '3.8'
+      imageName: 'macos-10.13'
     Windows_Python27:
       python.version: '2.7'
       imageName: 'vs2017-win2016'
     Windows_Python37:
       python.version: '3.7'
       imageName: 'vs2017-win2016'
+    Windows_Python38:
+      python.version: '3.8'
+      imageName: 'vs2017-win2016'
 
 pool:
   vmImage: $(imageName)

setup.py

@@ -46,6 +46,8 @@
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Topic :: Software Development :: Version Control",
         "Topic :: Utilities"
     ],