bump version and update changelog

Author: MilagrosMarin

CHANGELOG.md

@@ -3,6 +3,10 @@
 Observes [Semantic Versioning](https://semver.org/spec/v2.0.0.html) standard and
  [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) convention.
 
+## [0.4.2] - 2025-03-18
+
++ Fix - Add key_source to `ProbeLevelReport` to filter for 'good' quality units
+
 ## [0.4.1] - 2025-02-13
 
 + Fix - Auto generate ProbeInsertion allows duplicate probes (e.g. probe reuse)