Demo update

[h3]New features:[/h3]

• [p]Arena trap door[/p]

[p][/p][h3]Balancing:[/h3]

• [p]Increased enemy vision[/p]
• [p]Minor nerf to Churl stats[/p]
• [p]Reduced Ballista cost[/p]

[p][/p][h3]Fixes:[/h3]

• [p]Fixed Oath preview bug related to Oath of the Thespian[/p]
• [p]Fixed free item given alongside "3 free units" reward[/p]
• [p]Prevent rare instances of no treasure on small maps[/p]
• [p]Don't bring up Oath preview when navigating with mouse[/p]
• [p]Input type detection improvements[/p]