Improvements
Added Pause button (also activated via SPACE). You can construct buildings, begin training and issue orders while the game is paused.
Added x1, x2, and x3 game speed (which can be changed via F1, F2 and F3 keys) so you no longer have to wait around after building a massive defense.
When placing farm next to a gold mine, lumber peasants automatically move to harvest from gold mine without player input.
Bugfixes
Alt-tabbing out of the game now stops music and all sounds
Random tier 3 buildings are no longer available on second map where they shouldn't be
Fire no longer teleports between two different levels
Fire can now appear on diagonal terrain
Defeated bandit camp now correctly plays destruction animation instead of just disappearing
Music is no longer auto-reset to 50% every time you enter the game
A massive thank you to all players who helped me test this out and reported bugs, and to Lutel and Richard Yorke who uploaded videos! Your support means a lot!