Update README.md

README.md

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-Gentle Garbage Collection — unified edition (v2.6)
+Gentle Garbage Collection — unified edition (v2.7)
 ---
 For WoW 1.18.1 clients (Lua 5.0).
 
@@ -18,6 +18,16 @@ collections and plans with the lowest one it has seen. A
 pause can't be made shorter, but it can be moved. GentleGC moves it to
 moments you won't notice.
 
+- weirdperformance (WeirdUtils): supported. It replaces the game's collector:
+  each cycle does one full mark, then frees memory in small chunks, setting
+  the threshold to 128 KB above the memory in use between chunks. Gentle GC
+  recognizes this (through `GetWeirdUtilsVersion`), doesn't count or log the
+  chunks, never starts a collection in the middle of a cycle, lets the chunks
+  keep running in combat, and uses the combat headroom only to keep the next
+  cycle's full mark out of the fight. `/ggc` shows its cycles and chunks.
+  Don't run it together with wow_turbo: both replace the same part of the
+  game's collector.
+
 **When it collects**
 - Loading screens, logging out, death/release, AFK, flight masters, and when you
   open a merchant, bank, mailbox, auction house or trainer.