🎉 v2.5.1 — first Play Store production release!

v2.5.0 was prepared as the first production build but never published.
v2.5.1 completes note colours with sorting and is the version reaching production.

• Sort notes by colour — new in v2.5.1
• Note colours: 12-colour palette, in editor & multi-select
• Filter notes by colour
• Google Keep import from a Keep / Takeout .zip
• Checklist tap animation
• APK −11%: smaller download (5.2 → 4.7 MB)
