Add halfwidth_ascii_to_fullwidth() to Language
Add variants() method to Language

This is a convenience method for word preprocessing combinatorics.
It returns an array of words resulting from input words being
processed with all permutations of all subsets of given filters
(specified as array of symbols, corresponding to methods of the plugin)
Add uppercase() and lowercase() to Language
Improve word variants search in EDICT
Extract japanese filters into Language from EDICT
Improve word variants search in ENAMDICT
Improve word variants search in Daijirin
Make lookup() more publicly usable in EDICT
Improve word variants search in Conjugator
Filter CTCP/other repliable messages too in Router
Move inner-use constants to bottom in Auth
Add htmlentities gem
Unescape html entities in titles in Googler
Extract reusable regexp parsing in Language
Add TextMiner plugin