Fix heartbeat and bignum by mapping character 0 to 8. Fix backlight and contrast handling (by M. T. Jones). Add more icons (by M. T. Jones). Add OffBrightness for 20x4 (idea by S. Crane). Add range checking for config settings.
UNDERSTANDING LCDPROC DRIVERS LCDproc drivers are compiled as modules that will be loaded by the LCDd daemon's core on request. To understand how to write a driver see docs/API-0.5.txt or the section about the driver API in the Developer's Guide.