v0.3.0

Added

• The Zero 2 W model
• Badges and library installation instructions to the README

Changed

• Code formatting using gofumpt
• The location of tools.go from the module root to an internal package

Fixed

• Printers to use the proper Go technique for specifying the label width
• Tests to instantiate require assertions where that makes sense
• Miscellaneous minor code and documentation legibility issues