Truck City : Update notes for v1.0.8

Update notes for v1.0.8

Truck City v1.0.8 has just been released. This changelog also includes changes made in v1.0.7:

• Feature: added option to enable or disable screen border mouse scroll
• Improvement: completed missions show up in green in the menu
• Improvement: added translation for mission mode scenarios
• Balance: lowered cost of Quantum scrience production buildings 500 to 400
• Improvement: increased width of cargo selection in truck window
• Bugfix: regression bug corrected where leaderboard button was not enabled after returning to main menu from a game