whitelist some NSExpression function keywords
whitelist some NSExpression function keywords

cloudkite/Classy,mwkirk/Classy,aidansteele/Classy,aidansteele/Classy,olegam/Classy,ClassyKit/Classy,dnedrow/Classy,avalanched/Classy,avalanched/Classy,TippingCanoe/Classy,TippingCanoe/Classy,olegam/Classy,AlexanderNey/Classy,cloudkite/Classy,sudeepsidhu/Classy,dnedrow/Classy,fuzhiqiang1989/Classy,1yvT0s/Classy,1yvT0s/Classy,goodeggs/Classy,goodeggs/Classy,sudeepsidhu/Classy,dnedrow/Classy,cantinac/Classy,keithnorm/Classy,AlexanderNey/Classy,Snupps/Classy,wearezeta/Classy,ClassyKit/Classy,henrikhodne/Classy,henrikhodne/Classy,mwkirk/Classy,cantinac/Classy,Snupps/Classy,wearezeta/Classy,keithnorm/Classy,fuzhiqiang1989/Classy