tileset: Typo fix
tileset: Render in expanding order from center
tileset: Unify _posttraversal_helper and _iterate_helper
Update test_posttraverse to match expanding order
test_all: import logging
test_settings: ValueError → MissingConfigException
test_settings/test_manual: Match renders order with file
test_tileset: Add missing world parameter
test_tileset: Add required name item to defoptions
test_tileset: Drop unused correct_tiles list
test_tileset: Depth is now 5 because of ‘maxrow + 32’ in tileset.py
.travis.yml: Run the test suite
.travis.yml: MC_VERSION=1.7.4
.travis.yml: Add IRC notifications
Simplify RendertileSet code
RendertileSet: Round-robin the four top-level subtrees
RendertileSet: Cache the number of tiles
test_posttraverse{,_roundrobin}: Unduplicate expected list
Merge remote-tracking branch 'ion1/master'