v1.16

• General fixing of Columns API to allow filling a cell with multiple widgets before switching to the next column.
• Added documentation INDEX to top of imgui.cpp.
• Fixed unaligned memory access for Emscripten compatibility.
• Various pedantic warning fixes (now testing with Clang).
• Added extra asserts to catch incorrect usage.
• PushStyleColor() / PushStyleVar() can be used outside the scope of a window (namely to change variables that are used within the Begin() call).
• PushTextWrapPos() defaults to 0.0 (right-end of current drawing region).
• Fixed compatibility with std::vector if user decide to #define ImVector.
• MouseWheel input is now normalized.
• Added IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT compile-time option to redefine the vertex layout.
• Style editor: colors listed inside a scrolling region.
• Examples: tweaks and fixes.

v1.16b

• Fix broken PopStyleVar() - crashing.

v1.15

• Renamed IsHovered() to IsItemHovered().
• Added word-wrapping API: TextWrapped(), PushTextWrapPos(), PopTextWrapPos().
• Added IsItemFocused() to tell if last widget is being focused for keyboard input.
• Added overloads of ImGui::PlotLines() and ImGui::PlotHistogram() taking a function pointer to get values.
• Added SetWindowSize().
• Added GetContentRegionMax() supporting columns. Some bug fixes with using columns.
• Added PushStyleVar(),PopStyleVar() helpers to modify style from user code.
• Added dummy IMGUI_API definition in front of all entry-points for silly DLL action.
• Allowing BeginChild() allows to specify negative sizes to specify "use remaining minus xx".
• Windows with the NoResize flag can still use auto-fitting.
• Added a simple example console into the demo window.
• Comments and fixes.

v1.14

• Comments and fixes.
• Added SetKeyboardFocusHere() to set input focus from code.
• Added GetWindowFont(), GetWindowFontSize() for users of the low-level ImDrawList API.
• Added a UserData void *pointer so that the callback functions can access user state "Just in case a project has adverse reactions to adding globals or statics in their own code."
• Renamed IMGUI_INCLUDE_IMGUI_USER_CPP to IMGUI_INCLUDE_IMGUI_USER_INL

v1.13

• Added support for UTF-8 for international text display and text edition/input (if the font supports it).
• Added sample "M+ font" by Coji Morishita in extra_fonts/ to display Japanese text.
• Added IO.ImeSetInputScreenPosFn callback for positioning OS IME input.
• Added IO.FontFallbackGlyph (default to '?').
• OpenGL example: added commented code to load custom font from file-system.
• OpenGL example: shared makefile for Linux and MacOSX.

v1.12

• Added IO.FontBaseScale value for easy scaling of all windows.
• Added IsMouseHoveringWindow(), IsMouseHoveringAnyWindow(), IsPosHoveringAnyWindow() helpers.
• Added va_list variations of all functions taking ellipsis (...) parameters.
• Added section in documentation to explicitly document cases of API breaking changes (e.g. renamed IM_MALLOC below).
• Moved IM_MALLOC / IM_FREE defines. to IO structure members that can be set at runtime (also allowing precompiled ImGui to cover more use cases).
• Fixed OpenGL samples for Retina display.
• Comments and minor fixes.

v1.11

• Added more comments in the code.
• Made radio buttons render ascii when logged into tty/file/clipboard.
• Added ImGuiInputTextFlags_EnterReturnsTrue flag to InputText() and variants.
• Added #define IMGUI_INCLUDE_IMGUI_USER_CPP to optionally include imgui_user.cpp from the end of imgui.cpp
• Fixed file-descriptor leak if ImBitmapFont::LoadFromFile() calls to fseek/ftell fails.

v1.10

• User can override memory allocators by #define-ing IM_MALLOC, IM_FREE, IM_REALLOC,
• Added SetCursorPosX(), SetCursorPosY() shortcuts.
• Checkbox() returns true when pressed.
• Added optional external fonts data in extra_fonts/ for reference.
• Removed the need to setup IO.FontHeight when using a custom font.
• Added comments on external fonts usage.

v1.09

NOTE: The behaviour of PixelCenterOffset changed! You may need to change your value if you had set it to non-default in your code and/or offset your projection matrix by 0.5 pixels. It is likely that the default PixelCenterOffset value of 0.0 is now suitable unless your rendering uses some form of multisampling.

• Various minor render tweaks and fixes. Better support for renderers using multisampling.
• Moved IMGUI_FONT_TEX_UV_FOR_WHITE #define to a variable in the IO structure so font can be changed at runtime.
• Minor other fixes, tweaks, comments.

v1.08

• Fixed ImGuiTextFilter trimming of leading/trailing blanks.
• Fixed file descriptor leak on LoadSettings() failure.
• Fix type conversion compiler warnings.
• Added basic sizes edition in the style editor.
• Added CalcTextSize(), GetCursorScreenPos() functions.
• Disable client state in OpenGL example after rendering.
• Converted all Tabs to Spaces in sources.