Tasks with random initial values

Quick Reeborg update:

Reeborg's World now allows for tasks with randomly selected initial values within a certain range.  For example, this world (and solution) is such that Reeborg can start at any of three initial positions, in any of the four basic orientations.   Furthermore, there is an initially unspecified number of tokens at grid position (5, 4).    This type of random selection opens the possibility to create more interesting programming challenges.