Run tests on windows as well as linux

[bwhmather]

Will do a separate one for OSX once this is passing.

[coveralls]

Pull Request Test Coverage Report for Build 2053638154

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 8 of 10 (80.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.07%) to 98.144%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/ssort/_main.py	4	5	80.0%
src/ssort/_utils.py	4	5	80.0%

Totals
Change from base Build 2048889787:	-0.07%
Covered Lines:	1269
Relevant Lines:	1293

---

💛 - Coveralls

[jgberry]

Ignore my previous concern if you did see it (I have since deleted it) as I realized it was not substantial.

This looks good.

[bwhmather]

Have raised #66 to fix that todo