Merge pull request #1 from AbsVolatility/master

Add render method
readability and return instead of print
alphanum indexing
user input added
error messages
various stuff incl docstrings and # of player input
an actual game! kinda not really because you can't capture yet :(
oops I borked it
oops wrong x arrangement
maek code bettar, forwards movement
Fix move validation
Merge branch 'master' of https://github.com/AbsVolatility/ascii-checkers-club into AbsVolatility-master

Conflicts:
	checkers.py
Merge pull request #7 from user2509848/patch-5

Fix move validation
Input validation
Merge pull request #8 from user2509848/patch-7

Input validation
fixed input
Update checkers.py
Merge pull request #9 from PhiNotPi/patch-2

fixed "forwards" movement
king promotion, also minor readability and docstring fixes
Fix input validation again