Merge pull request #552 from adzerk/add-pull-request-template

Add pull request markdown template

.github/pull_request_template.md

@@ -0,0 +1,24 @@
+<!--
+Please include a summary of the change. Please also include relevant motivation and context. Consider describing the type of change (if it's a new feature, a bug fix, a refactor...).
+-->
+
+### Does this change relate to existing issues or pull requests?
+
+<!--
+Include links to issues that should be fixed with this change or that are related to this change.
+If this change depends on existing pull requests, also include a link to them here.
+If this change needs a follow up, describe what still needs to be done, including links to already opened issues or pull requests.
+-->
+
+### Does this change require an update to the documentation?
+
+<!--
+If relevant, please consider reflecting the changes you are introducing in the documentation.
+-->
+
+### How has this been tested?
+
+<!--
+Please describe the tests you ran to verify your change.
+Provide reproducible instructions.
+-->