Removed TreeAdvanceToLabelPos() which is rarely used and only does SetCursorPosX(GetCursorPosX() + GetTreeNodeToLabelSpacing()). Kept redirection function (will obsolete). (#581, #324)

TabBar: Fixed unfocused tab bar separator color (was using ImGuiCol_Tab, should use ImGuiCol_TabUnfocusedActive).

Fixed unnecessary test in UpdateMouseWheel() (thanks PVS). ...

TreeNodeBehavior: avoid computing bg_col for non-framed non-active tree nodes.
Comments, binaries update, minor typos.

Moved ImGuiColumnsFlags erroneously forward declared in imgui.h + demo bit.

Settings: Minor optimization to reduce calls in SettingsHandlerWindow_WriteAll.

Renamed ImFontAtlas::CustomRect to ImFontAtlasCustomRect. Keep redirection typedef (will obsolete).

Prefixed internal structs exposed in imgui.h with a fully qualified name to facilitate auto-generation with cimgui.

Combo: Hide arrow when there's not enough space even for the square button. ...

+ Various todo items.

fonts/binary_to_compress: display error message when failing to open file + misc comments.

Window: Mouse wheel scrolling while hovering a child window is automatically forwarded to parent window if ScrollMax is zero on the scrolling axis. Also still case if ImGuiWindowFlags_NoScrollWithMouse is set (not new), but previously the forwarding ...

would be disabled if ImGuiWindowFlags_NoScrollbar was set on the child window, which is not the case any more (amend #1502, #1380).

Scrollbar: Avoid overlapping the opposite side when window (often a child window) is forcibly too small.

Misc: Added IMGUI_DISABLE_METRICS_WINDOW imconfig.h setting to explicitly compile out ShowMetricsWindow(). + Internals: Minor renaming.

Added SetScrollXHere, SetScrollFromPosX: Changelog, demo, comments (#1580).

Added 'SetScrollHereX' and 'SetScrollFromPosX' (#1580)

Internals: Checkbox: Added undocumented mixed/indeterminate/tristate support via ImGuiItemFlags_MixedValue. (#2644)

Child windows inherit Hidden frames setting from parent more accurately, so HiddenFramesCannotSkipItems is honored by child windows.

Internals: Moved CalcListClipping close to ImGuiListClipper code (no-op)

Internals: ImGuiListClipper using absolute coordinate (instead of relative one). Minor no-op tweaks + ImDrawListSplitter assert

Style: Attenuated default opacity of ImGuiCol_Separator in Classic and Light styles.

Doc: Tweak and extra mention of AddCustomRectFontGlyph + made the example register two rectangles.

Demo: Using ImVec2(-FLT_MIN,0.0f) instead of ImVec2(-1.0f,0.0f) where it makes sense. (#2449)

ImDrawListSplitter: Fixed memory leak when using low-level split api (was not affecting ImDrawList api, also this type was added in 1.71 and not advertised as a public-facing feature).

Internals: Renamed GetFrontMostPopupModal() to GetTopMostPopupModal() to be consistent. Renamed other locals to follow that terminology.

Word-wrapping: Fixed overzealous word-wrapping when glyph edge lands exactly on the limit. Because of this, auto-fitting exactly unwrapped text would make it wrap. (fixes initial 1.15 commit, 78645a7d).

Examples: SDL+DX11: Changelog, readme, batch files, fixed vcxproj, minor stylistic fixes + minor sync of other main.cpp files. (#2632)

Implement SDL/dx11 sample

Window: Fixed InnerClipRect right-most coordinates using wrong padding setting (introduced in 1.71).

Fiedx OpenGL ES 3.0 include for iOS and tvOS (#2631)

Updated Ogre bindings (#2619) ...

And support python

Internals: Columns: Poke into WorkRect and use them in the GetContentRegionMax() functions. This should be a no-op, but preparing us to transition toward using WorkRect instead of ContentRegionRect. ...

Removed one use of ContentsRegionRect.