Version 0.3 (04.07.2016)

- Added content-field to Cell-class and 
  added methods: setContent() and getContent().
- Changed Cell.toString()-method.

Version 0.2 (20.06.2016)

- Added braid-method to Grid-class.
- Added possiblity to export/import maze to/from JSON.

Version 0.1 (13.06.2016)

- Initial version.
- Includes Grid, Cell and Distances classes.
- Implements algorithms: Aldous Broder, Binary Tree,
  Hunt And Kill, Recursive Backtracker, Sidewinder
  and Wilson.
  
