docs: add issue and pull request template

.github/ISSUE_TEMPLATE/a--bug-performance-issue.md

@@ -0,0 +1,21 @@
+---
+name: Bug/Performance Issue
+about: Use this template for reporting a bug or a performance issue.
+labels: bugfix
+---
+
+**System information**
+- Have I written custom code (as opposed to using a stock example script provided in TensorFlow):
+- OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
+- Python version:
+
+**Describe the current behavior**
+
+**Describe the expected behavior**
+
+**Code to reproduce the issue**    
+Provide a reproducible test case that is the bare minimum necessary to generate the problem.
+
+**Other info / logs**    
+Include any logs or source code that would be helpful to diagnose the problem. 
+If including tracebacks, please include the full traceback. Large logs and files should be attached.

.github/PULL_REQUEST_TEMPLATE/a--bug-fix.md

@@ -0,0 +1,19 @@
+---
+name: a) Bug fix
+about: Select this if you're fixing a bug in Numpy-ml.
+labels: bugfix
+---
+
+<!--
+Please make sure you've read and understood our contributing guidelines;
+https://github.com/ddbourgin/numpy-ml/blob/master/contributing.md
+-->
+
+**- What bug I fixed**
+
+This pull request fixes #issue_number_here .
+
+**- How I fixed it**
+
+**- How you can verify it**
+<!-- You need a good justification for not including tests for the bug you fixed. -->

.github/PULL_REQUEST_TEMPLATE/b--new-feature.md

@@ -0,0 +1,27 @@
+---
+name: b) New feature
+about: Select this if you're adding a new feature to Numpy-ml.
+labels: feature
+---
+
+<!--
+Please make sure you've read and understood our contributing guidelines;
+https://github.com/ddbourgin/numpy-ml/blob/master/contributing.md
+-->
+
+This pull request closes #issue_number_here .
+
+**- What I did**
+
+**- How I did it**
+
+**- How to verify it**
+<!-- 
+You need a good justification for not 
+including tests for the new feature you added. 
+-->
+
+
+- [ ] I updated the docs.
+
+This pull request adds a new feature to Numpy-ml. Ask @ddbourgin to take a look.