Add *-text-size-adjust to RELAXED config
Merge branch 'master' of github.com:ehudc/sanitize into dev-3.1.0
Add unprefixed `text-size-adjust` property to relaxed CSS config.
Bump version.
Merge branch 'master' into dev-3.1.0

Conflicts:
	HISTORY.md
Use Crass 1.0.1.

This required a few tweaks to CSS sanitization due to changes in
Crass's parse tree output (which in turn resulted from changes to the
CSS parsing spec).
Merge branch 'master' into dev-3.1.0

Conflicts:
	HISTORY.md
	lib/sanitize/version.rb
Update Nokogumbo to 1.2.0.

Fixes #119.