Release 4.0.5

• Fix stale README examples and document lazy Word.parts (a16f386)
• fix: don't treat Object.prototype members as reserved words (#5) (22a56ac) - thanks @mindlace!
• Fix assignment and parameter expansion edge cases (dcc0f6a)
• Bound compound syntax nesting and recovery (7102207)
• Expose nested expansion structure (4acb748)
• Report syntax errors and parse test regex operands (1cc08c6)
• Decode ANSI-C quotes and preserve unfinished literals (73cefe8)
• Preserve redirect and heredoc semantics (a17bdae)
• Keep redirects on nameless commands (45f01b4)
• Cut allocation and dispatch overhead in hot paths (75eaa26)
• Materialize word token values lazily (a5823d2)
• Update docs: when to use unbash? (71b7db1)
• Format (9a16b4f)