Release 4.0.11

• Enable GitHub releases (resolves #9) (c21a0e3)
• Preserve hash literals at nested word boundaries (33ec233)
• Terminate empty-delimiter heredocs when printing (e2f6c64)
• Cover upstream syntax edge cases (fe40610)
• Reject empty then bodies (598b268)
• Decode backtick quotes inside double quotes (7ab51ce)
• Parse continued command substitutions (72a5ecb)
• Preserve parameter slice boundaries around nested syntax (f322518)
• Refresh benchmark results (abd7346)