Release 4.6.1: tidy README, add changelog, stop forcing Nampower event CVars on 4.5.0+

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019W3rwwjHwAer9dAQAg4q7V

parser-native.lua

@@ -315,10 +315,18 @@ parser:RegisterSource("nampower", {
     return "needs SuperWoW or ClassicAPI for GUID unit tokens"
   end,
   enable = function()
-    -- auto attack and heal events are off by default in Nampower
-    for _, cvar in pairs({ "NP_EnableAutoAttackEvents", "NP_EnableSpellHealEvents" }) do
-      local ok, value = pcall(GetCVar, cvar)
-      if ok and value == "0" then pcall(SetCVar, cvar, "1") end
+    -- Auto attack and heal events are off by default in Nampower. From 4.5.0
+    -- on, registering the event turns it on, so the saved CVars stay untouched.
+    -- Older versions only know the CVars.
+    local major, minor = 0, 0
+    local ok, a, b = pcall(GetNampowerVersion)
+    if ok then major, minor = tonumber(a) or 0, tonumber(b) or 0 end
+
+    if major < 4 or (major == 4 and minor < 5) then
+      for _, cvar in pairs({ "NP_EnableAutoAttackEvents", "NP_EnableSpellHealEvents" }) do
+        local ok, value = pcall(GetCVar, cvar)
+        if ok and value == "0" then pcall(SetCVar, cvar, "1") end
+      end
     end
 
     for event in pairs(nampower) do