Merge remote-tracking branch 'origin' into 2015-03-antialiased-primitives ...

Conflicts:
	imgui.cpp

ImFont: added GetCharAdvance() helper. Exposed font Ascent and font Descent.

ImageButton() changed default bg_col parameter from (0,0,0,1) black to (0,0,0,0) tranparent + drawing frame even when no padding (#243)

Selectable() changed prototype moved flags before size. size override should rarely have been used! sorry. #125

Selectable() parameter comment

Selectable() added flags ImGuiSelectableFlags_DontClosePopups , ImGuiSelectableFlags_SpanAllColumns (#125)

Added IsWindowHovered() helper.

Version 1.41 WIP

Version 1.40

Merge remote-tracking branch 'origin' into 2015-04-indexed-rendering ...

Conflicts:
	imgui.cpp

Merge remote-tracking branch 'origin' into 2015-03-antialiased-primitives

Version increased to 1.40 WIP makes more sense than 1.39 (changelog is huge)

BeginPopupContextWindow() in_empty_space_only -> !also_over_items (#126)+ comments ...

Sorry if you used this parameter already.

Added ImGuiListClipper helper to avoid using CalcListClipping() directly.

RetWindowCollapsed() to IsWindowCollapsed() for consistency. Kept inline indirection.

Added IMGUI_DISABLE_OBSOLETE_FUNCTIONS

Comments, moved Sliders below Drag & Input in imgui.h

Comments

Comments

Renamed IsRectClipped to IsRectVisible for consistency. Note that return value is opposite! Kept inline redirection function (will obsolete)

Added GetItemsLineHeightWithSpacing() helper.

Added BeginPopupContextVoid() helper for completeness (#126)

BeginPopupContextWindow() rearranged and clarified parameters (#126)

Added BeginPopupContextItem() / BeginPopupContextWindow() (#126)

Added IsAnyItemHovered() public helper.

Added PushButtonRepeat() / PopButtonRepeat(). REMOVED third 'repeat_if_held' parameter of Button() !

Added configurable io.KeyRepeatDelay, io.KeyRepeatRate

Button centering left to RenderTextClipped function.

OpenPopup() Comments

Examples: various usage comments.