add difference, intersection and fromList
add difference, intersection and fromList

mperry/frege,mperry/frege,sjfloat/frege,ppelleti/frege,scrotty/frege,vsts/frege,vsts/frege,sjfloat/frege,mperry/frege,ppelleti/frege,oppai/frege,ppelleti/frege,oppai/frege,oppai/frege,vsts/frege,scrotty/frege,sjfloat/frege,scrotty/frege