Merge remote-tracking branch 'upstream/3.x' into stable

* upstream/3.x:
  (maint) Remove skipping based on commit msg

Conflicts:
	appveyor.yml

Removed skip_commits as was done in 3.x

Author: joshcooper

appveyor.yml

@@ -1,6 +1,4 @@
 version: 4.1.0.{build}
-skip_commits:
-  message: /(^\(?doc\)?.*|.*[A|a]cceptance [T|t]est.*)/
 clone_depth: 10
 init:
   - SET