Merge pull request #153 from pepkit/dev

Updated creation of PR template

Author: khoroshevskyi

.github/pull_request_template.md

@@ -0,0 +1,8 @@
+## Changes:
+- ...
+
+
+## TODO:
+- [ ] ❗ If this PR includes a new database schema migration, following steps are completed: [Database Version Migration](https://pep.databio.org/pephub/developer/pepdbagent/database_version_migration/)
+- [ ] Version of pepdbagent updated in `__version__.py` file
+- [ ] Changelog updated