isolate python code
Squashed 'autoload/drawille/' content from commit 975d20c

git-subtree-dir: autoload/drawille
git-subtree-split: 975d20c2984f5c07b9967cd47066160aa55c60a1
Merge commit 'f3829bceb5460413a445330dc8aca3c62ae34bcb' as 'autoload/drawille'
Mention default mappings in README