Python 3.7.7. (#40)

* Python  3.7.7.

* addressed license

manifests/Python/Python/3.7.7.yaml

@@ -0,0 +1,17 @@
+Id: Python.Python
+Version: 3.7.7
+Name: Python
+Publisher: Python
+Homepage: https://www.python.org
+License: PSF LICENSE AGREEMENT FOR PYTHON
+LicenseUrl: https://docs.python.org/3/license.html
+Description: Python is a programming language that lets you work more quickly and integrate your systems more effectively.
+AppMoniker: python
+Installers: 
+    - Arch: x64
+      Url: https://www.python.org/ftp/python/3.7.7/python-3.7.7-amd64.exe
+      InstallerType: Exe
+      Sha256: 1a0368663ceff999d865de955992b6ea3cb0c8cb15a1a296a8eb7df19cc59e69
+      Switches:
+        Silent: /Quiet
+        SilentWithProgress: /Passive