Текущие группы функционала (по файлам):
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app       | Plugin, Handler, Service, Lang, lang, Setting, setting, Addon, addon
db        | SQL, NoSQL, Cache
gui       | window, control, number, date, time, ip, select, confirm, setting, alert, prompt, password, captcha, browse, text, progress
log       | log, debug, error, fatal, info, notice, severe, warning
net       | http
parser    | re, html
play      | clean, sfx, Player
skin      | name, condition, label, image, has, screenshot
system    | sleep, isabort, sound, rpc, execute, server, restart, shutdown, config, monitor, FS, fs
test      | Test, TestRun
_window   | Window, XML, Dialog, DialogXML, wid, did, window, dialog
_control  | Button, Check, Edit, Fade, Group, Image, Label, List, Progress, Radio, Slider, Text
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InfoTagMusic -> play(?)
InfoTagVideo -> play(?)

PlayList -> play (возможно переделать из объекта list)
PlayListItem -> play
