feat(facade): add selective module mounting for v0.9.1

docs(auth): simplify public auth facade examples

feat(rix): expose auth through unified facade

Release v0.6.1

Release v0.6.0

Release v0.5.1

Release v0.5.0

v0.4.1 - README update and io module metadata alignment

v0.4.0 - structural stability and header-only io