chore: bump version to 1.7.2 and update changelog

HealBotBlue.toc

@@ -1,6 +1,6 @@
 ## Interface: 11200
 ## Title: HealBotBlue
-## Version: 1.7.1
+## Version: 1.7.2
 ## Author: Bluewhale
 ## Notes: Raidframe replacement for healing, decursing, resource tracking and buffing with optional support for SuperWow, ClassicAPI, UnitXP_SP3 and Nampower.
 ## SavedVariablesPerCharacter:  HealBot_Config

HealBot_Controller_Spells.lua

@@ -873,7 +873,7 @@ function HealBot_GetShapeshiftForm()
           local icon_lower = string.lower(icon)
           -- Exclude non-standard/custom forms like Tree of Life from unshifting
           if not string.find(icon_lower, "humanoidform") and not string.find(icon_lower, "treeoflife") and not string.find(icon_lower, "healingway") and not string.find(icon_lower, "stoneclawtotem") then
-            return i;
+            return nil;
           end
         else
           return i;

README.md

@@ -49,7 +49,7 @@ Default installation path: `C:\Program Files\World of Warcraft\Interface\AddOns\
 
 ### Change Log
 
-* **v1.7.2**
+**v1.7.2**
 * **Performance Fix - Table Pooling** - Fixed massive Vanilla Lua 5.0 garbage collection memory leaks caused by unbounded table allocations in high-frequency update loops (e.g., `OnUpdate` and `PreserveStateByGUID`). Moved tables to file-local scope and implemented inline clearing.
 * **Performance Fix - OOC Cleanup** - Added an out-of-combat garbage collection hook (`PLAYER_REGEN_ENABLED`) to purge disconnected senders from the `HealBot_IncomingHealers` global table, preventing memory bloat during prolonged play sessions.
 * **Bug Fix - Incoming Heals Comms** - Fixed a regex string parsing bug that caused incoming heals from other HealBot instances to drop if a unit's name contained non-alphabetic characters (e.g. dashes or spaces in pet names).