Just released Dark Fighter v0.4.2. Changes include:

• Selecting a building now gives you a radial menu so you can sell the building or view the buy menu
• Research is not instantaneous anymore and can only go to level 5
• Ships grow when zooming out, instead of replacing the graphics
• All buildings go to low power when on negative, with flashing alerts
• Changed build dependencies
• Asteroids don't explode when mined out anymore
• Buildings repair automatically (no icon yet)
• Menus fiddled with
• Selection box bug fixed
• Towers shooting bug fixed