Mouse controls and a more friendly UI. World gen improvements so it runs a lot (a whole lot) faster. More frequent bugfixes and the convenience of steam updatin

Mouse controls and a more friendly UI. World gen improvements so it runs a lot (a whole lot) faster. More frequent bugfixes and the convenience of steam updating. 'Timeline' saves so you can kinda savescum your fort a bit if you like. After the first batch of patches DF classic will be brought up to parity with DF premium, and they will then be developed together.