Bug Fixes

• remove circular reference in Browser (518cb11), closes #3075
• browser: ensure browser state is EXECUTING when tests start (#3074) (dc7265b), closes #1640
• doc: Document release steps for admins (#3063) (a701732)
• middleware: Obey the Promise API. (93ba05a)
• server: pass bound port to preventEADDRINUSE issue. (#3065) (850a90b)

Features

• preprocessor: Allow preprocessor to handle binary files (#3054) (7b66e18)