Partial cleanup

Removed a number of Windows workarounds

v1.4.0

What's Changed

• Swift 6.1 support by @dabrahams in #10

Full Changelog: v1.3.0...v1.4.0

Gradual improvement

Documentation is more complete, including:

1. instructions for avoiding spurious warnings
2. stopped claiming to work around an un-workaroundable SPM bug

Removed non-functioning workaround.

Swift Toolchain Executables

Adds support for swift toolchain commands and fixes non-reentrant local target command builds

First release

v1.0.0

Make executable product conditional on Windows