Update notes for v1.0.12

[p]Truck City v1.0.12 has just been released. This is the changelog:[/p]

• [p]Improvement: modified the incoming trucks column for produced containers in the factory window (thank you Nneu). The old interface made it confusing to understand the total amount of incoming trucks.[/p]
• [p]Improvement: added translation for language names[/p]
• [p]Improvement: added some missing translations[/p]
• [p]Improvement: minor performance improvements[/p]