Fix missing configuration of "self.pending"
Incorporate Emit_IntegerValue and improve error checking
Accommodate binary values in the assembler
Enforce uniform coding style
Rework I2C example library and add an example for TI's TCA9554 I2C I/O expander chip
Incorporate modified ../libi2c.s and restructure to match ../TCA9554
Incorporate modified ../libi2c.s and restructure to match ../TCA9554