Allow PCA.fit() to accept generators
Allow PCA.fit() to accept generators

cxhernandez/msmbuilder,msmbuilder/msmbuilder,peastman/msmbuilder,stephenliu1989/msmbuilder,Eigenstate/msmbuilder,msultan/msmbuilder,dotsdl/msmbuilder,msultan/msmbuilder,rmcgibbo/msmbuilder,dr-nate/msmbuilder,rafwiewiora/msmbuilder,brookehus/msmbuilder,dotsdl/msmbuilder,Eigenstate/msmbuilder,dr-nate/msmbuilder,mpharrigan/mixtape,dr-nate/msmbuilder,msmbuilder/msmbuilder,msmbuilder/msmbuilder,Eigenstate/msmbuilder,rafwiewiora/msmbuilder,msultan/msmbuilder,mpharrigan/mixtape,mpharrigan/mixtape,cxhernandez/msmbuilder,stephenliu1989/msmbuilder,peastman/msmbuilder,mpharrigan/mixtape,mpharrigan/mixtape,brookehus/msmbuilder,peastman/msmbuilder,brookehus/msmbuilder,msultan/msmbuilder,rmcgibbo/msmbuilder,msmbuilder/msmbuilder,dotsdl/msmbuilder,stephenliu1989/msmbuilder,dr-nate/msmbuilder,peastman/msmbuilder,Eigenstate/msmbuilder,rafwiewiora/msmbuilder,msmbuilder/msmbuilder,Eigenstate/msmbuilder,msultan/msmbuilder,cxhernandez/msmbuilder,rmcgibbo/msmbuilder,rafwiewiora/msmbuilder,stephenliu1989/msmbuilder,rmcgibbo/msmbuilder,cxhernandez/msmbuilder,dr-nate/msmbuilder,dotsdl/msmbuilder,peastman/msmbuilder,brookehus/msmbuilder,brookehus/msmbuilder,rafwiewiora/msmbuilder,cxhernandez/msmbuilder