Marked all fmt + va_list functions with format attribute so GCC/Clang can warn about them. Not ignoring -Wsuggest-attribute=format anymore for GCC/Clang.

Version 1.52 WIP

Version 1.51

Style: Tweaked default border (undo half-way from original c1e1e01) (#707)

Minor miscellaneous merges from Navigation branch to reduce divergence a little bit

Renamed IsItemHoveredRect() to IsItemRectHovered(). Renamed IsMouseHoveringWindow() to IsWindowRectHovered() - follow up to previous commit 6be7d49 merged from Nav.

Style: Added obsolete redirects for ImGuiCol_Columns*** fields. (ref 648f75b)

Merge part of 88c1966 from Nav branch. Renamed IsMouseHoveringAnyWindow() -> IsAnyWindowHovered(), IsMouseHoveringWindow() -> IsWindowHoveredRect() for consistency. Kept inline rediection function.

(internals) Renamed FocusedWindow to NavWindow to match terminology of navigation branch

Merge 20a0fde Tidying up default clipboard handler for non Windows-OS (from Nav branch)

Merge 2545d75 from Nav - Tidying up, removed two unnecessary window flags from being exposed in imgui.h

Minor miscellaneous merges from Navigation branch to reduce divergence a little bit

ImRect::Clip() -> ClipWith() to clarify meaning, going to undo the change in Nav branch.

Fixed an assert when calling CloseCurrentPopup() twice in a row.

Removed tabs that slipped through the cracks

Columns: Caching columns clipping rectangles (#125)

Columns: Moved PushColumnClipRect() to imgui_internal.h

Columns: Fix for explicit content width and scrollbar. (#519, #125)

Columns: Columns set resize based on the presence of vertical scrollbar. Not 100% sure about that but it looks like we've fixed enough bugs that this may not cause troubles anymore. (#125, #913, #893, #1138)

Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)

Columns: Fixed another form of shearing made visible by the PreserveWidth option. The code was initially added in c46d563 to fix because we've fixed in e42aaed. (#913, #125)

Columns: A set of column (and most importantly the right-most column) do not register its content to the parent, not affecting the window contents size. (#519, #125, #913)

Columns: Added ImGuiColumnsFlags_NoResize flag (internal). (#913, #125)

Columns: Fixed one form of shearing during resizing columns with PreserveWidth enabled (there's another issue still). (#913, #125)

Columns: Removed unnecessary/misleading dummy ItemSize(). Was fixed already before, and fixed again in this branch by 3bf2af2. (#913, #125). End() calls EndColumns() directly.

Columns: Fixed offset rounding leading to SetColumnOffset() being destructive when ImGuiColumnsFlags_NoPreserveWidths flag is not set. (#913, #125)

Columns: Fixed EndColumns() not repositioning the cursor. (#913)

Columns: Moved BeginColumns/EndColumns/flags from #913 to imgui_internals.h + minor shallow tweaks. Removed demo code temporarily. (#125)

Merge branch 'master' of https://github.com/ggtucker/imgui into ggtucker-master ...

# Conflicts:
#	imgui.cpp
#	imgui.h

Renamed GetStyleColName() to GetStyleColorName() for consistency. Extra comments in Api Breaking Changes section.