Close issues automatically

Problem: Some issues are kept open after the pull request is merged
Solution: Add a "resolves" to the issue template so they are closed by default.
https://help.github.com/articles/closing-issues-using-keywords/

.github/PULL_REQUEST_TEMPLATE.md

@@ -2,6 +2,9 @@
 
 _What Github issue does this resolve (please include link)?_
 
+- resolves #
+- resolves #
+
 ### Proposed Changes
 
 _Describe what this Pull Request does_