uLisp Version 1.2 now includes a simple, unified I2C and SPI interface using read-byte and write-byte to transmit data via the appropriate interface, and streams to identify which interface is being used. For more details see I2C and SPI serial interfaces.
uLisp Version 1.2 also includes the bitwise logical operators logand, logior, logxor, lognot, logbitp, and the bitwise shift operator ash.