Minor README change
Add support for configuration
Update preprocessing dependencies
Add CSS import fixtures
Move cli fixtures
Move all CSS feature fixtures
Add new CLI options

Configure `@import` root directory from the CLI. Add 'compress' option.
Update tests; add tests for new features
Update README
Update CHANGELOG
0.3.0
Update README
Fix preprocessor options in test file
Fix README CLI docs
Update 'rework-suit' to ^4.0.0
0.4.0