Merge pull request #427 from sliverc/pull_request_template

Add pull request template

Author: n2ygk

docs/pull_request_template.md

@@ -0,0 +1,11 @@
+Fixes #
+
+## Description of the Change
+
+## Checklist
+
+- [ ] PR only contains one change (considered splitting up PR)
+- [ ] unit-test added
+- [ ] documentation updated
+- [ ] changelog entry added to `CHANGELOG.md`
+- [ ] author name in `AUTHORS`