Update issue templates

.github/ISSUE_TEMPLATE/bug-report-or-support-request.md

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+---
+name: Bug report or support request
+about: For support requests, please use [Drupal Answers](http://drupal.stackexchange.com/questions/tagged/drush)
+  instead
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+What did you do?
+
+**Expected behavior**
+What did you expect would happen?
+
+**Actual behavior**
+What happened instead?
+
+**Workaround**
+Is there another way to do the desired action?
+
+### System Configuration
+| Q               | A
+| --------------- | ---
+| Drush version?  | 9.x/8.x (please be specific, and try latest dev build)
+| Drupal version? | 7.x/8.x
+| PHP version     | 5.6/7.1
+| OS?             | Mac/Linux/Windows
+
+**Additional information**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.