OCaml implementation of Bill Gosper's hashlife algorithm. See https://en.wikipedia.org/wiki/Hashlife
Executable gol is a quick test program that reads a .rle file on the
command line (e.g. enclosed file glider.rle), and then displays and
animates the GOL using the following keys:
ddouble the size of the macrocellsone step forwardrresult i.e. 2^(n-2) steps forward if the macrocell has size 2^n * 2^nqquit