Palanqin 0.1 (2020-11-01)

The first alpha release.  Mecrisp Stellaris can be executed, but no
peripherals or interrupts are implemented.  More features to follow.

Palanqin 0.2 (2020-11-15)

Second alpha release.  Notable improvements:

 * improve emulation speed by 30%
 * handle undefined instructions better
 * add B705 opcode to execute a DOS interrupt
 * add contrib/advent and contrib/stellaris as example software
   packages to be used with Palanqin
 * implement MRS Rd, spec_reg
