Update - Tigris and Euphrates v4.1

Tigris and Euphrates v 4.1 is now available.
Summarizing all recent work, this includes:
- A choice of maps
- Optional use of ziggurat and advanced buildings
- Priority treasures marked
- Private hands actually private
- Automated counting scoring cubes
- Lots of new useful menu/keyboard commands
- Randomized turn order that can be referred to throughout the game.