Added the word length to the clue text.
Split cell out and added save/load code
Grid storer
Added loading and saving code.
Split out cell and added #save
Added initial saving code.
Added GameRepository which loads and saves games.
Corrected #from_text
Fixed #to_text and #from_text
Adapted for loading from file.

Added #from_ankh_file
Added #set_dimensions
Added #add_cell and #add_clue.
Split out the GameRepository class.
Merge completed saving and loading code.