Editor: Support ImGui r18836 after SetItemUsingMouseWheel removal (#218), thanks @ocornut

# Conflicts:
#	docs/CHANGELOG.txt

Author: thedmd

docs/CHANGELOG.txt

@@ -2,6 +2,8 @@ v0.9.2 (WIP):
 
     NEW: Editor: Add offset of hover/select to style (thanks @MultiPain)
 
+    CHANGE: Editor: Support ImGui r18836 after SetItemUsingMouseWheel removal (#218), thanks @ocornut
+
     CHANGE: Editor: Define IMGUI_DEFINE_MATH_OPERATORS before <imgui.h> (#209), thanks @ocornut
 
     CHANGE: Examples: Define IMGUI_DEFINE_MATH_OPERATORS before <imgui.h> (#209), thanks @ocornut

imgui_node_editor.cpp

@@ -2560,7 +2560,10 @@ ed::Control ed::EditorContext::BuildControl(bool allowOffscreen)
     if (!allowOffscreen && !m_IsHovered)
         return Control();
 
-# if IMGUI_VERSION_NUM >= 17909
+# if IMGUI_VERSION_NUM >= 18836
+    if (m_IsHoveredWithoutOverlapp)
+        ImGui::SetItemKeyOwner(ImGuiKey_MouseWheelY);
+# elif IMGUI_VERSION_NUM >= 17909
     if (m_IsHoveredWithoutOverlapp)
         ImGui::SetItemUsingMouseWheel();
 # endif