New in Alpha 3:
* Several Gerber parser fixes.
* Excellon parser support for floating point coordinates.
* Scroll wheel support!
* Multi-width isolation is automated.
* Support for "P" (Regular polygon) aperture type in Gerber.
* Added measuring tool.
* Full support of Aperture Macros (AM) in Gerber.
* Multi-threading reliability issues (prevents some freezing).
* Board cutout tool now takes into account the tool width.
* Double-sided PCB Tool now can mirror Excellon Objects.
* Plot/Solid/Multicolored check boxes work for Gerber and Excellon.
* Icons!!!
Known problems in Alpha 3:
* Holes in standard apertures are ignored in Gerber parser.
* %LPD% and %LPC% are ignored in Gerber parser.
* Some anomalies saving and loading projects.
* Some other annoyances...