Various fixes and alterations to improve /simple

Line 2 change to char to reduce memory and to make graphical changes
later easier.

line 49, allowed a draw to be a suitable ending.

Line 77 changed code to make replay actually work
line 92 reworded to make instructions clearer
line 150-160s reworked to include drawing condition and to fix replaying
reformated and rearranged
Added framework for AI
Created a comment framework for AI
Collapsed winning function.
Comments tidied up slightly
Merge remote-tracking branch 'origin/tic-tac-toe-changes'