4.1.1
refactor: set default pattern
Merge pull request #3744 from curbengh/no-multi-assign
Merge pull request #3918 from curbengh/ignore-theme-node
refactor(permalink): full_url_for() has built in prettyUrls()
fix(permalink_filter): handle null config (#3928)
refactor: drop lodash & es6 syntax for lib/theme (#3809)