Update notes for v1.0.9

[p]Truck City v1.0.9 has just been released. This is the changelog:[/p]

• [p]Improvement: less floaty middle mouse panning[/p]
• [p]Improvement: added missing translations in Leaderboard window[/p]
• [p]Improvement: load, save, and leaderboard item lists now play an SFX when items are clicked[/p]