1.0.8 - build 2014.05.20

Cumulative changes since last release:

Steam-specific:
- Added leaderboards, one per story scenario
- Added two new achievements for finishing commissions in San Francisco

Keyboard shortcuts:
- Escape closes any open popups or dialogs
- WASD move the viewport around
- +/- zoom in and out
- 1/2/3 change game speed to paused/normal/fast
- Backspace toggles the HUD on or off

UI changes:
- Fixed text cutoff in the trade dialog, when showing amounts over $ 9999
- Different visuals for the speed and layers buttons

Sandbox changes:
- Commission sites (eg. US Mint) no longer counted as potential trading partners
- Neighbors no longer offer to buy resources you can't produce because of location (eg. when lacking stone, barley, etc)