Add pull request template

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,47 @@
+# A clear and descriptive title (No issue numbers please)
+
+> _This template is rather extensive. Fill out all that you can, if are a new contributor or you're unsure about any section, leave it unchanged and a reviewer will help you_ :smile:. _This template is simply a tool to help everyone remember the BioJulia guidelines, if you feel anything in this template is not relevant, simply delete it._
+
+## Types of changes
+
+This PR implements the following changes:
+_(Please tick any or all of the following that are applicable)_
+
+- [ ] :sparkles: New feature (A non-breaking change which adds functionality).
+- [ ] :bug: Bug fix (A non-breaking change, which fixes an issue).
+- [ ] :boom: Breaking change (fix or feature that would cause existing functionality to change).
+
+## :clipboard: Additional detail
+
+- If you have implemented new features or behaviour
+  - **Provide a description of the addition** in as many details as possible.
+
+  - **Provide justification of the addition**.
+
+  - **Provide a runnable example of use of your addition**. This lets reviewers
+    and others try out the feature before it is merged or makes it's way to release.
+
+- If you have changed current behaviour...
+  - **Describe the behaviour prior to you changes**
+
+  - **Describe the behaviour after your changes** and justify why you have made the changes,
+    Please describe any breakages you anticipate as a result of these changes.
+
+  - **Does your change alter APIs or existing exposed methods/types?**
+    If so, this may cause dependency issues and breakages, so the maintainer
+    will need to consider this when versioning the next release.
+
+  - If you are implementing changes that are intended to increase performance, you
+    should provide the results of a simple performance benchmark exercise
+    demonstrating the improvement. Especially if the changes make code less legible.
+
+## :ballot_box_with_check: Checklist
+
+- [ ] :art: The changes implemented is consistent with the [julia style guide](https://docs.julialang.org/en/v1/manual/style-guide/).
+- [ ] :blue_book: I have updated and added relevant docstrings, in a manner consistent with the [documentation styleguide](https://docs.julialang.org/en/v1/manual/documentation/).
+- [ ] :blue_book: I have added or updated relevant user and developer manuals/documentation in `docs/src/`.
+- [ ] :ok: There are unit tests that cover the code changes I have made.
+- [ ] :ok: The unit tests cover my code changes AND they pass.
+- [ ] :pencil: I have added an entry to the `[UNRELEASED]` section of the manually curated `CHANGELOG.md` file for this repository.
+- [ ] :ok: All changes should be compatible with the latest stable version of Julia.
+- [ ] :thought_balloon: I have commented liberally for any complex pieces of internal code.