Add ASCII letters
Basic block text painting
Refactor BlockString#to_a
Remove TODO
Add block numbers
Fix widths of block characters
Rename ambiguously named variables
Remove accidentally committed PNG
Move default settings to Config#reset!, eager load defaults
Add BlockString specs
Implement pending specs - use Config#reset! between tests of AsciiPaint.config
Move textfiles into data directory
Add tempfile option for paintings
Version 0.2.0