v0.8.1

Changelog

290ff86 yaml: block scalar multiline improvements.
d65f279 yaml: inline comments after literals
2365845 Improve Elixir lexer based on Pygments
6d6e9cd Update the awk lexer to better support gawk
fb0b720 Kotlin improvements around string interpolation, escaping, and generics (#392)
86ebaf3 Remove unintended changes
aac3294 Fix regex from as? to as?; add one more test case for !==
8a54f9e add many operators to kotlin
8d0d2b8 Add more keywords to kotlin lexer
477ad4a Add await and async keywords to jsx and javascript