Patch 4.4.0/API changes

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Summary

• The client now supports a new _Cata suffix for loading client-specific TOC files.
• The client now supports comma-delimited Interface versions, allowing addons to declare a TOC file as being compatible with multiple versions or flavors of the game at once.
• The C_ChatInfo.SendAddonMessage now more aggressively throttles all addon traffic on a per-prefix level, and returns an enum result code instead of a boolean when a message is unable to be queued for transmission. See the Patch 10.2.7 addon messaging changes for more details.

Resources

• TOC: 40400
• Diffs: wow-ui-source, BlizzardInterfaceResources

Breaking changes

• The behavior of the legacy _Classic TOC suffix has changed.
  • TOC files with this suffix now load on all Classic client flavors. Previously, they would only load on Classic Era.
  • AddOns which require a TOC file only load on Classic Era should instead use the _Vanilla suffix.