Release 4.0.9

• Demote reserved words after a command prefix (389a0f6)
• Read an array subscript as a matched pair in assignment position (1a86366)
• Recognize conditional operators only when written unquoted (b85e8a5)
• Keep a trailing backslash as a literal word character (919266e)
• Consume $$ as a unit when scanning a parameter expansion (b6b2652)
• Scan over nested substitutions inside a parameter expansion (b3a4040)
• Close $[ at the first unnested bracket (7064588)
• Recognize case in a substitution only at a word boundary (d4c9a1e)
• End a heredoc body at a delimiter line that closes its substitution (d5ca651)
• Read a backquoted heredoc delimiter as literal text (2548b66)
• Treat # as ordinary inside a $(( extent (bf2d743)
• Trim comments added with the parser backlog fixes (84fe18b)
• Update benchmarks (tree-sitter 0.25.1 builds in node 24) (c8a3c7a)