- switching to new C_AddOns API changes

- cascaded message hooking for Retail v12 engine
- messages during encounters are sent unchanged, with a one-time notice
- ignore numbered chats that do not exist
- /r no longer sends to an empty whisper target if the last told target is unavailable
- fixed replacements in instance chats
- messages to unknown numbered channels are now discarded
- right-click on the minimap button

GricheldeConstants.lua

@@ -106,17 +106,17 @@ Grichelde.SUPPORTED_CHAT_COMMANDS = {
 }
 
 Grichelde.BLIZZ_TYPE_TO_OPTIONS = {
-    ["SAY"]          = "say",
-    ["EMOTE"]        = "emote",
-    ["YELL"]         = "yell",
-    ["PARTY"]        = "party",
-    ["GUILD"]        = "guild",
-    ["OFFICER"]      = "officer",
-    ["RAID"]         = "raid",
-    ["RAID_WARNING"] = "raidWarning",
-    ["INSTANCE"]     = "instance",
-    ["BATTLEGROUND"] = "battleground",
-    ["WHISPER"]      = "whisper",
+    ["SAY"]           = "say",
+    ["EMOTE"]         = "emote",
+    ["YELL"]          = "yell",
+    ["PARTY"]         = "party",
+    ["GUILD"]         = "guild",
+    ["OFFICER"]       = "officer",
+    ["RAID"]          = "raid",
+    ["RAID_WARNING"]  = "raidWarning",
+    ["INSTANCE_CHAT"] = "instance",
+    ["BATTLEGROUND"]  = "battleground",
+    ["WHISPER"]       = "whisper",
 }
 
 -- do not replace these patterns
@@ -486,7 +486,6 @@ end
 
 -- faster function lookups by mapping to local refs
 Grichelde.F = {
-    IsAddOnLoaded   = _G.IsAddOnLoaded,
     assert          = _G.assert,
     type            = _G.type,
     print           = _G.print,