Bugfixes, minor additions

-Fixed another multi-move bug
-Fixed bugs for right and backwards
-Added "away" as opposite to "towards"
-Added support for multiple royal units on one side
-Added support for continuous decay of moves
-Added support for being required to jump over a specific number of
units (need to add support for "up to" certain number and "at least" a
certain number of jumps)
-fixed take_all bug, needs testing
-Fixed return_squares for check_move not returning squares that were
moved through as part of a multi move