Checka11y.css

CSS was refactored to use modern logical CSS properties for improved internationalisation

New features:

• Detect aria-hidden="true" on interactable elements (#175 credit @elidakirigo)

Fixes:

• Resolve issue where a warning would showing during npm i for projects using checka11y-css that were not using npm 9 (#169 credit @jackdomleo7)

Fixes:

• Correctly lowering the lowest supported version of Node to v14 (#168 credit @jackdomleo7)

Bugs:

• < and > appearing in messages instead of < and > (#165 credit @jackdomleo7)
• License comment appearing thrice in stylesheet (#164 credit @tannerdolby)