Change the copyright from "JetBrains s.r.o." to "JetBrains s.r.o. and Kotlin Project contributors" Update only 2 lines copyright.
Instead of mutating the matcher create a new one when `next()` is called. This allows getting named groups from that matcher later. Add lookbehind in matchSequence test to ensure this change doesn't alter the existing behavior. Also fixes #KT-20865
nikita.movshin