update: README.md
update: README.md
update: Refactor CTResult: Pass NoPass Msg SkipOnNotPass() -> Failed() Msg() SkipOnFailed()
refactor: isTry -> enumMode
update: Try -> try
update: README.md
update: ModeXXX public -> private
update: finished NotPass
update: add CTResult.Log/Logf
update: example for Empty and Len