Filter.swift: Import Foundation for @objc
Filter.swift: Import Foundation for @objc

`@objc` is only available if Foundation is imported. Not importing it
causes a compilation error when building from the command line.

Quick/Quick,BlessNeo/Quick,jasonchaffee/Quick,cerberillo/Quick,wjszf/Quick,marciok/Quick,ichu501/Quick,luzefeng/Quick,ichu501/Quick,ikesyo/Quick,romankl/Quick,mrackwitz/Quick,DrewKiino/Quick,romankl/Quick,msdgwzhy6/Quick,hanangellove/Quick,jasonchaffee/Quick,hwsyy/Quick,ikesyo/Quick,Sweefties/Quick,ashfurrow/Quick,dcaunt/Quick,modocache/personal-fork-of-Quick,BlessNeo/Quick,dcaunt/Quick,phatblat/Quick,Quick/Quick,pedrovereza/Quick,jondwillis/Quick,phatblat/Quick,paulyoung/Quick,mrackwitz/Quick,hanangellove/Quick,fullstackclub/Quick,cerberillo/Quick,nchatharoo/Quick,marciok/Quick,NatashaTheRobot/Quick,pengleelove/Quick,jahilliard/Quick,Quick/Quick,msdgwzhy6/Quick,wjszf/Quick,pcantrell/Quick,ArthurKK/Quick,dgdosen/Quick,fullstackclub/Quick,dgdosen/Quick,DanielAsher/Quick,ArthurKK/Quick,paulyoung/Quick,NatashaTheRobot/Quick,ashfurrow/Quick,pcantrell/Quick,hwsyy/Quick,mokagio/Quick,jeffh/Quick,mokagio/Quick,Quick/Quick,jahilliard/Quick,DanielAsher/Quick,jeffh/Quick,marciok/Quick,jondwillis/Quick,jeffh/Quick,ikesyo/Quick,paulyoung/Quick,DrewKiino/Quick,dgdosen/Quick,phatblat/Quick,phatblat/Quick,jasonchaffee/Quick,pedrovereza/Quick,Sweefties/Quick,nchatharoo/Quick,pengleelove/Quick,modocache/personal-fork-of-Quick,luzefeng/Quick,mokagio/Quick