v3.0.0

BREAKING CHANGES

• Make async to work with parse5 streams
  • You have to await diffHtml and isEqual
• Remove ignoreDuplicateAttributes option since parse5 doesn't support duplicate attributes any more (see inikulin/parse5@225d27f)

Fixes

• Update deps
• Remove unneeded dependencies

developing

• replace istanbul with nyc (active version of istanbul)
• use same eslint config as marked tests