Update Classe -> Textile 2.5.4

"This release fixes multiple issues with Textile library and its formatting features. This is the final feature release for the legacy 2.5.x series. From 2.5.4 onwards, 2.5.x will only receive critical security fixes and patches, while 3.x is moving forwards."

(!) I can you prepare the last release : 3.5.5 (https://github.com/textile/php-textile/releases)