ENH: github templates for issues and PRs

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,40 @@
+_Please fill out following information while also paying attention to comments.
+Depending on your issue not all fields might apply -- just remove those which
+do not apply, and remove the comments.  Thanks!_
+
+### Environment:
+
+#### Your OS (including release name/version):
+#### Fail2Ban version:
+
+_If your Fail2Ban version is outdated, and you can't verify that the issue persists in
+the recent release, better seek support from the distribution you obtained Fail2Ban from_
+
+### The issue:
+
+_Summary here_
+
+#### Steps to reproduce
+
+#### Expected behavior
+
+#### Observed behavior
+
+#### Any additional information
+
+### Supplementals
+
+#### Any customizations done to /etc/fail2ban/ configuration
+```
+```
+
+#### Relevant parts of /var/log/fail2ban.log file:
+_preferably obtained while running fail2ban with `loglevel = 4`_
+
+```
+```
+
+#### Relevant lines from monitored log files in question:
+
+```
+```

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,9 @@
+Before submitting your PR, please review the following checklist:
+
+- [ ] **CONSIDER adding a unit test** if your PR resolves an issue
+- [ ] **LIST ISSUES** this PR resolves
+- [ ] **MAKE SURE** this PR doesn't break existing tests 
+- [ ] **KEEP PR small** so it could be easily reviewed.
+- [ ] **AVOID** making unnecessary stylistic changes in unrelated code
+- [ ] **ACCOMPANY** each new `failregex` for filter `X` with sample log lines 
+      within `fail2ban/tests/files/logs/X` file