Prepares the 9.4.2 release (HELD for the operator)

CHANGELOG.md

@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [9.4.2] - 2026-09-22
+
+### Fixed
+
+- A `\U` escape in a string literal is refused with the same error as `\u`:
+  `"caf\U00e9"` no longer lexes silently to `cafU00e9`.
+- An invalid date literal's error message keeps its non-ASCII characters:
+  `#2024-01-1é#` reports the character instead of one truncated byte, so the
+  message a host reads is valid UTF-8.
+
 ## [9.4.1] - 2026-09-13
 
 ### Added

mix.exs

@@ -2,7 +2,7 @@ defmodule Predicator.MixProject do
   use Mix.Project
 
   @app :predicator
-  @version "9.4.1"
+  @version "9.4.2"
   @description "A secure, non-evaling condition (boolean predicate) engine for end users"
   @source_url "https://github.com/riddler/predicator-ex"
   @deps [