Add bug report issue template

The primary purpose is to encourage users to check that the versions of `ndarray`, `ndarray-stats`, and Rust they're using are compatible.

Author: jturner314

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,30 @@
+---
+name: Bug report
+about: Create a bug report for ndarray-stats
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Description**
+Description of the bug.
+
+**Version Information**
+- `ndarray`: ???
+- `ndarray-stats`: ???
+- Rust: ???
+
+Please make sure that:
+- the version of `ndarray-stats` you're using corresponds to the version of `ndarray` you're using
+- the version of the Rust compiler you're using is supported by the version of `ndarray-stats` you're using
+(See the "Releases" section of the README for correct version information.)
+
+**To Reproduce**
+Example code which doesn't work.
+
+**Expected behavior**
+Description of what you expected to happen.
+
+**Additional context**
+Add any other context about the problem here.