Inconsistent parameters among message events

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For example,

Events emitted in series when the bot is @-ed.
message.group.@.me (event, context)
message.group.@ (event, context)
message.group (event, context)
message (event, context)

In another hand, if a group message is received without any @ tags including the bot.
message.group.@ (event, context, atTags)
message.group (event, context, atTags)
message (event, context, atTags)

And normal messages without any @ tag.
message.group (event, context)
message (event, context)

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The solution will be to make the third parameter of all message events a list of all CoolQ tags, to maintain the consistency among message events.

#17 is already in plan to provide those CoolQ tags.