add editorconfig
first "text" renderer cases
fix git modules
form cases
add language: php to travis.yml
add cases and fix CI
remove HHVM (problems with phpmd)
add prefix renderer
more renderers
more renderers
title case renderer
sentence case renderer
fix stopwords after colon
sentence: add test for empty string
eliminate crazy preg_replace_callback()
add suffix support
add quote renderer
refactor
cleanup
clean tests