v0.9.1: Mac versionfix and plenty of polish

Mac players: the game now starts from Steam. Until now the Mac version stopped at launch, or hung so Steam couldn't close it. Sorry to everyone who hit that, and thank you to the player who reported it.

Also in this update:

• The combat log names every kill and says when a fight runs out of time.
• Crafting no longer puts a hero to work at two benches at once, or on the road.
• A Vault Materials tab that shows everything the guild holds.
• A long list of smaller fixes.

Full patch notes