Version 4.2.0

What's Changed

• feat: add partial document update (Patch) with conditional atomic operations by @SebastianKuesters in #157
• chore: clear the 23 build warnings and re-enable warnings as errors by @SebastianKuesters in #158
• Release by @SebastianKuesters in #159

Full Changelog: v4.1.0...v4.2.0