* make tests run on windows as the default
- change from selecting tests to run to selecting tests to skip (remove all :windows tags, add
:skip-windows tag to tests that don't currently work on windows)
- handfuls of calls to `normalize` and `escape-file-paths` to handle platform differences
- split `task-test` to make most of the tests run on windows, and exclude just a couple of Unix-y tests
* make a binding name clearer
* skip nrepl-server-test on Windows
- test fails on CI, so disabling it for now
* unset bb environment vars after running tests
* unset bb environment var after running release-artifact
BABASHKA_EDN being set can interfere with some tests, so unset it before running the
native tests
* skip uberjar test on Windows
uberjar-test's 'throw on empty classpath' test failing on Windows native
(but passes on JVM) - skip it for now
