Use ARC (finally)
More ARC fixes
New cell map helper class
Added markers to the helper classes at the top of the file
New algorithm outline
Implement new algorithm step 1
Add macro to measure how much time is spent during layout
New reload data
Added a way to get a generalized cell
Get some cells on there
Add and remove columns the cruel way

This still needs to be optimized
Factorized row cache code
Factorize column layout code
Work backwards when adding columns after
Add rows after
Remove out-of-bound rows
Add rows before
Comment out debug info
Fixed an issue with sizes
Prioritize dequeuing same-sized cells