* Run unit tests on Windows as well.
* Test on mac.
* Continue running on error.
* Compared normalized paths to work cross platform.
* Only test common set of mimetypes across operating systems.
* add 'is_default' to model paths config
including impl and doc in example file
* update weirdly overspecific test expectations
* oh there's two
* sigh
* Expand user path.
* Add test.
* Add unit test for expanding base path.
* Simplify unit test.
* Remove comment.
* Remove comment.
* Checkpoints.
* Refactor.