master -> dev/gfdl synchronization

.github/pull_request_template.md

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+**Description**
+
+Include a summary of the change and which issue is fixed. Please also include
+relevant motivation and context. List any dependencies that are required for
+this change.
+
+Fixes # (issue)
+
+**How Has This Been Tested?**
+
+Please describe the tests that you ran to verify your changes. Please also note
+any relevant details for your test configuration (e.g. compiler, OS).  Include
+enough information so someone can reproduce your tests.
+
+**Checklist:**
+
+Please check all whether they apply or not
+- [ ] My code follows the style guidelines of this project
+- [ ] I have performed a self-review of my own code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings
+- [ ] Any dependent changes have been merged and published in downstream modules