Save 2 Scalar containers per Promise.new
Save 2 Scalar containers per Promise.new

GC runs from 18 -> 14 for Promise.new for ^50000

No change for subclasses of Promise

salortiz/rakudo,salortiz/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,rakudo/rakudo,tbrowder/rakudo,rakudo/rakudo,salortiz/rakudo,rakudo/rakudo,rakudo/rakudo,MasterDuke17/rakudo,MasterDuke17/rakudo,salortiz/rakudo,MasterDuke17/rakudo,labster/rakudo,labster/rakudo,tbrowder/rakudo,rakudo/rakudo,labster/rakudo,salortiz/rakudo,salortiz/rakudo,labster/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,labster/rakudo,rakudo/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,labster/rakudo