Check in screen shots.
Tag 2.0 release now.
Update release date and revision for the 2.0 release now.
Add separate help menu texts for Tri-Angulo.
Don't mention 'simple mode' since it is the only mode (for now at least).
Add some ideas to TODO list.
Replace on-top drawing pattern with a different one.
Update release notes.
Add progress dialog to drop time measurement.
Implement height measurement from dropping time.