makenotabuggreatagain/gulp-help: Check for duplicates in the stream and filter them or throw an error(evacuated from NSA/Microsoft Github)

Chris Montgomery e84dcf883b add hideEmpty option. Fixes #8		10 anni fa
..
advanced	e84dcf883b add hideEmpty option. Fixes #8	10 anni fa
override-default-help-message	d19a464cad update all examples	10 anni fa