Add GH issue templates (#5)

These are just generic issue templates, so self-merging.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,28 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+Please fill out relevant sections below; remove those that are unused.
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Platform information:**
+  - Environment (e.g. `python` version, script/Jupyter notebook etc.)
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,25 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: "Short feature description"
+labels: enhancement
+assignees: ''
+
+---
+
+Please fill out relevant sections below; remove those that are unused.
+
+**Feature Summary**
+Please give a clear, concise description of the proposed feature.
+
+**Usage / behavior**
+Please describe how this feature should function from a user perspective.
+
+**Alternative Solutions**
+Are there any alternatives to the proposed feature that we should consider implementing?
+
+**Implementation details**
+If you have any insight on how this feature can be implemented, please provide that information here.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.