BFA event removals and argument changes

[Thrumbar]

May have something to do with this

https://us.battle.net/forums/en/wow/topic/20762318007

• UNIT_SPELLCAST_SUCCEEDED - no longer provide spell name and rank.
• UNIT_SPELLCAST_FAILED_QUIET - no longer provide spell name and rank.
• UNIT_SPELLCAST_INTERRUPTED - no longer provide spell name and rank.
• UNIT_SPELLCAST_START - no longer provide spell name and rank.
• UNIT_SPELLCAST_FAILED - no longer provide spell name and rank.
• UNIT_SPELLCAST_STOP - no longer provide spell name and rank.
• UNIT_SPELLCAST_DELAYED - no longer provide spell name and rank.
• UNIT_SPELLCAST_CHANNEL_START - no longer provide spell name and rank.
• UNIT_SPELLCAST_CHANNEL_UPDATE - no longer provide spell name and rank.
• UNIT_SPELLCAST_CHANNEL_STOP - no longer provide spell name and rank.

[Thrumbar]

Activating mount in group no longer produces any debug in chat...

[Phanx]

Other event changes in BFA:

• CHAT_MSG_GROUP removed (replaced by what???)
• ARENA_TEAM_INVITE_REQUEST removed (replaced by what???)