Add support for 3-state outer-totalistic rules
Rulestring specification is here: https://www.conwaylife.com/forums/viewtopic.php?f=11&t=4254
This would have quite a few advantages, such as natively supporting a wide range of existing rules which otherwise would only be supported as eightbit rule tables. The BSFKL rulespace is also a subset of this rulespace, so it may be possible to get this rulespace by generalising the BSFKL specification (possibly even deprecating it and handling the rules with this new algorithm, unless the BSFKL algorithm is specifically optimised for BSFKL rules).
It may also be possible to generalize this up to 3-state HROT, but I'm not sure on that.