Add support for additional animation properties
Add support for additional animation properties

"infinite" and "alternate" now match

jonpacker/stylus,galenvagen/stylus,johnnycopperstone/stylus,a-x-/stylus,silvaemota/stylus,rstacruz/stylus,baotingfang/stylus,ThiagoGarciaAlves/stylus,peterkinalex/stylus-1,Delapouite/stylus,stylus/stylus,jameswomack/stylus,Panya/stylus,yetone/stylus,PeterWangPo/stylus,HossainKhademian/Stylus,angryrobot/stylus,Zagorakiss/stylus,Ricardh522/stylus,cemoulto/stylus,SimenB/stylus,jangarcia/stylus,behzad88/stylus,trixter5/stylus,meteor/stylus,modulexcite/stylus,tyv/stylus