Use sets in simplification for 30% speedup
Use sets in simplification for 30% speedup

GtTmy/pyeda,GtTmy/pyeda,GtTmy/pyeda,pombredanne/pyeda,cjdrake/pyeda,cjdrake/pyeda,cjdrake/pyeda,karissa/pyeda,pombredanne/pyeda,sschnug/pyeda,sschnug/pyeda,karissa/pyeda,sschnug/pyeda,karissa/pyeda,pombredanne/pyeda