Bump version and add CHANGELOG covering OTP 27+ multi-quoted strings,
OTP 27 numeric underscore separators, OTP 25/27 ?= maybe-match
operator, OTP 29 native records, parameterised macro calls,
compile-time BIF list, and several lexer correctness fixes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>