use https instead of git protocol

git protocol is blocked on some networks

tox.ini

@@ -15,13 +15,10 @@ deps=
     lowest: itsdangerous==0.21
     lowest: blinker==1.0
     release: blinker
-    devel: git+git://github.com/mitsuhiko/werkzeug.git
-    devel: git+git://github.com/mitsuhiko/jinja2.git
-    devel: git+git://github.com/mitsuhiko/itsdangerous.git
-    devel: git+git://github.com/jek/blinker.git
-
-# extra dependencies
-git+git://github.com/jek/blinker.git#egg=blinker
+    devel: git+https://github.com/mitsuhiko/werkzeug.git
+    devel: git+https://github.com/mitsuhiko/jinja2.git
+    devel: git+https://github.com/mitsuhiko/itsdangerous.git
+    devel: git+https://github.com/jek/blinker.git
 
 [testenv:docs]
 deps = sphinx