v0.6.0

Highlights:

• syntax
  • Parse now takes an io.Reader instead of []byte
  • Invalid UTF-8 is now reported as an error
  • Remove backtracking for $(( and ((
  • Walk now takes a func literal to simplify its use

Binaries built on go version devel +ed0b232 Mon Dec 5 03:53:56 2016 +0000 linux/amd64.