1.5.0

• improved resource handling

1.4.0

• cleanup and minor fixes

1.3.0

• add support for 'rem' unit
• get rid of all the w3c dependencies
• simplification/modernization

1.2.0

• code cleanup and simplification

1.1.0

prepare version 1.1.0

1.0.0

next try version 1.0.0