Added zip archive support.
Аdded ability to change layer color and transparency.
Added fit-to-window feature.
Bug fixes.
Free and easy to use app for Gerber file viewing. How to use? Just add gerber file (one or more) from your device with "+" button and set it visibility with checkbox. Change its color and opacity. Then go to next screen (navigate to screens with two toolbar buttons at the top of screen) and use common gestures for zoom and pan.
