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Some minor changes, mostly structure improvement.
Better UI. Full load/save. Custom map size.
Bug #4 closed. Now cell knows who moves on it (field.targetedBy).
Minor changes: some variables made private, and Crocodile::goTo() replaced by simplier Crocodile::walk()
Authors and license information added.
*Correct* authors imformation added. Link to source repo added.
Merge pull request #7 from numberZero/master

Made the github.io thing up-to-date