Add issue and PR templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,29 @@
+---
+name: Bug Report
+about: Report an issue with Emacs Prelude you've discovered.
+---
+
+*Use the template below when reporting bugs. Please, make sure that
+you're running the latest Emacs Prelude and that the problem you're reporting
+hasn't been reported (and potentially fixed) already.*
+
+**Remove all of the placeholder text in your final report!**
+
+## Expected behavior
+
+## Actual behavior
+
+## Steps to reproduce the problem
+
+*This is extremely important! Providing us with a reliable way to reproduce
+a problem will expedite its solution.*
+
+## Environment & Version information
+
+### Emacs version
+
+*E.g. 24.5* (use <kbd>M-x emacs-version</kbd> to check it if unsure)
+
+### Operating system
+
+*E.g. Fedora 23, OS X 10.11 "El Capitan", Windows 10, etc*

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature Request
+about: Suggest new Emacs Prelude features or improvements to existing features.
+---
+
+**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.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,14 @@
+**Replace this placeholder text with a summary of the changes in your PR.
+The more detailed you are, the better.**
+
+-----------------
+
+Before submitting the PR make sure the following things have been done (and denote this
+by checking the relevant checkboxes):
+
+- [ ] The commits are consistent with our [contribution guidelines](../blob/master/CONTRIBUTING.md)
+- [ ] You've added tests (if possible) to cover your change(s)
+- [ ] You've updated the [changelog](../blob/master/CHANGELOG.md) (if adding/changing user-visible functionality)
+- [ ] You've updated the [user manual](../blob/master/doc) (if adding/changing user-visible functionality)
+
+Thanks!