LiBot 5.0.5

Changes:
* [core] Support 'w' for week when parsing duration
* [core] Use JDA-NAS
* [module-utilities] Add support for base conversion in *calc
* [module-utilities] Change *calc syntax (for modes)
* [module-utilities] Enable output colorization in *calc
* [module-utilities] Improve modes for *calc
* [module-utilities] Rewrite *chatbot
Fixes:
* [module-games] Fix a bug in *akinator and update Akiwrapper to 1.6
* [module-search] Fix a bug in *urbandictionary
* [module-utilities] Fix a rare crash condition in *chatbot
* [module-utilities] Fix *calc's handling of long results
* [module-utilities] Fix the warning symbol in *calc
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