v3.0.1

Highlights:

• cmd/shfmt
  • Fix an edge case where walking directories could panic
• syntax
  • Only do a trailing read in Parser.Stmts if we have open heredocs
  • Ensure comments are never folded into heredocs
  • Properly tokenize ) after a =~ test regexp
  • Stop parsing a comment at an escaped newline
• expand
  • "$@" now expands to zero fields when there are zero parameters

Binaries built on go version go1.13.5 linux/amd64.