Updates standards-version to 4.0.0, updates debian/copyright url header to https form

debian/changelog

@@ -4,6 +4,8 @@ python-axolotl (0.1.39-3) UNRELEASED; urgency=medium
     - Fixes dependency on python3, thanks to Adrian Bunk
       <bunk@debian.org> for the patch. (Closes: #867419)
     - Removes quilt as build-dependency.
+  * Standards version updated to 4.0.0:
+    - debian/copyright: Updates copyright-format URL, now uses https form.
 
  -- Josue Ortega <josue@debian.org>  Fri, 07 Jul 2017 14:01:35 -0600
 

debian/control

@@ -14,7 +14,7 @@ Build-Depends: debhelper (>= 9),
  python3-axolotl-curve25519 (>= 0.1),
  python3-crypto (>= 2.6.1),
  python3-protobuf (>= 3.0.0),
-Standards-Version: 3.9.8
+Standards-Version: 4.0.0
 Homepage: https://pypi.python.org/pypi/python-axolotl
 Vcs-Git: https://anonscm.debian.org/cgit/collab-maint/python-axolotl.git
 Vcs-Browser: https://anonscm.debian.org/cgit/collab-maint/python-axolotl.git

debian/copyright

-Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: python-axolotl
 Source: https://github.com/tgalal/python-axolotl