0.22.0

Language

• Stop parsing blocks when they don't have any statements. (#731)
• Handle Ast::Discard when building the scope tree. (#724)
• Allow parsing case branches with brackets for CSS. (#727)
• Show better error message for missing variant. (#725)
• Show better error location for missing CSS definition semicolon. (#726)

Bundler

• Put index.css after head to honor CSS specificity set by classes. (#723)

Runtime

• Make sure that we set empty references as Maybe.Nothing.
• Set styles as strings if one of the values contains !important definitions. (#728)

Test runner

• Use new headless parameters for testing in Chrome.

Housekeeping

• Updates for Crystal 1.15.0
• Updates to the GitHub Action workflows.

Full Changelog: 0.21.0...0.22.0