v0.2.0

This release makes some changes to the HTML renderer. The biggest change is that the color swatches now produce a definition list (<dl>) instead of a table. This is more semantically correct, but could be potentially breaking for users who have invested time formatting, consuming, or styling those tables.

We've also expanded the options for the color contrast report, adding options to skip either the AA or AAA test rows, or to skip the table altogether and just produce the examples.