Handle UTF-8 decoding for rendering and text size calculation

Tab to spaces

Renamed section in documentation

Update version number in sources

Added va_list variations of all functions taking ... parameters (from Andrea Pessino)

Moved IM_MALLOC/IM_FREE/etc. to IO structure members one can set at runtime.

Added IsPosHoveringAnyWindow()

Added IsMouseHoveringWindow(), IsMouseHoveringAnyWindow()

Doc formatting + adding 'API changes' section

Added IO.FontBaseScale for global rescale. Renamed SetFontScale to SetWindowFontScale

Added version number in sources

Fixed file-descriptor leak if ImBitmapFont::LoadFromFile() calls to seek/tell fails.

Added #define IMGUI_INCLUDE_IMGUI_USER_CPP to optionally include imgui_user.cpp

Added extra_flags parameters to InputInt(), InputFloat(). Used in example code. Commented out broken ImGuiInputTextFlags_AlignCenter.

Added ImGuiInputTextFlags_EnterReturnsTrue

Made radio button render ascii when logged into tty/file/clipboard

Added more comments in the code.

Minor tweaks to "Memory override" pull request

Memory override #3

Added FAQ/comments

Added IO.FontYOffset. Added asserts.

Remove IO.FontHeight, cached automatically. Added assertions.

Added SetCursorPosX, SetCursorPosY shortcuts

Checkbox() return true when pressed

Moved IMGUI_FONT_TEX_UV_FOR_WHITE define to a variable so font can be changed at runtime

Fixes to allow clean 1-pixel thick lines in more use cases. PixelCenterOffset not the same as previously!

Minor fixes to scrollbar rendering, close button and made checkbox/radio button padding more consistent.

Collapse triangle don't have a shadow unless borders are enabled. ...

Fixed cross that appears when hovering window close button to be perfectly 45 degrees.

Fixed collapsing header border (if borders are enabled) being off the clip rectangle. ...

Tweak demo window.

Added comments