Better GitHub contributing integrations

Fixes #309

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,7 @@
+- [ ] I have visited the [source website], and in particular
+  read the [known issues]
+- [ ] I have searched through the [issue tracker] for duplicates
+
+  [source website]: https://github.com/tqdm/tqdm/
+  [known issues]: https://github.com/tqdm/tqdm/#help
+  [issue tracker]: https://github.com/tqdm/tqdm/issues?q=

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+- [ ] I have visited the [source website], and in particular
+  read the [known issues]
+- [ ] I have searched through the [issue tracker] for duplicates
+- [ ] If applicable, I have mentioned the relevant/related issue(s) in this PR
+
+  [source website]: https://github.com/tqdm/tqdm/
+  [known issues]: https://github.com/tqdm/tqdm/#help
+  [issue tracker]: https://github.com/tqdm/tqdm/issues?q=

MANIFEST.in

@@ -1,6 +1,6 @@
 # Misc
 include .coveragerc
-include CONTRIBUTE
+include .github/CONTRIBUTING.md
 include LICENCE
 include logo.png
 # include images/logo.gif

README.rst

@@ -683,7 +683,7 @@ All source code is hosted on `GitHub <https://github.com/tqdm/tqdm>`__.
 Contributions are welcome.
 
 See the
-`CONTRIBUTE <https://raw.githubusercontent.com/tqdm/tqdm/master/CONTRIBUTE>`__
+`CONTRIBUTING <https://raw.githubusercontent.com/tqdm/tqdm/master/.github/CONTRIBUTING.md>`__
 file for more information.