cleanup, animals example removed because it's superseded by the point…

…ers/animalgame example now

also optimize BRA+RTS into just BRA

release 12.0

IR/VM: SGN sets status bits

beta6

beta5

beta 4 now with support for long values

support assignment to indexed pointer targets

optimize certain word multiplication with bit shifting if it's a powe…

…r of 2

fix doc build

release 11.4.1