Bug Fixes

• cli: wait for help task to finish before exiting (#3160) (f10cee1)
• mock-doc: make Node.contains() return true for self (#3150) (f164407)
• mock-doc: allow urls as css values (#2857) (6faa5f2)
• sourcemaps: do not encode inline sourcemaps (#3163) (b2eb083), closes #3147

Features

• dist-custom-elements-bundle: add deprecation warning (#3167) (c7b07c6)