Added GetContentRegionAvailWidth() helper. Demo tweaks.

Turning float ScrollY into ImVec2 Scroll - no feature change, this is just to remove some syntax noise from the following commit (#246)

Tidying up

Added GetCurrentWindowRead() for functions that don't write to the window

Fixed OpenPopup() accessing current window, effectively opening "Debug" on an empty window stack

Minor internal shortcuts not calling GetCurrentWindow()

Style: rename ScrollbarWidth to ScrollbarSize (sorry!)

TreeNode() fixed IsItemHovered() being inconsistent with visual behavior (#282)

Split tree/collapsable into internal TreeNodeBehaviorIsOpened() helper (unsure..) (#282)

TreeNode(): arbitrary interaction padding after text label not part of layout (#282)

IO.WantInputCharacters -> WantTextInput (#305)

InvisibleButton() honor negative size consistently with other widgets that do so

ImDrawList: added AddBezier(), PathBezierTo() for cubic bezier curves (#311)

Examples: OpenGL: fix for retina screens + io.DisplayFramebufferScale storage (#287)

Malformed UTF-8 don't terminate string, output 0xFFFD (#307)

Added ColorConvertU32ToFloat4() helper and ImColor(ImU32) constructor.

Added GetWindowHeight() for completeness + BeginGroup() comment.

ImDrawList: Fixed issues with channels split/merge. Functional without manually adding a draw cmd. + Removed unnecessary parameter to Channe

Window clipping rect fixes (for child windows with borders among others)

Comments

Tabs to spaces

Fixed child windows with the ImGuiWindowFlags_NoMove flag not taking direct focus

Metrics: showing some internal state

Passing ImGuiWindowFlags_NoMove to BeginChild() allows to inhibit moving root window from this child

Trim trailing whitespace (#305)

Remove CaptureInputCharactersFromApp and minor cleanups (#305)

Added flag showing whether the GUI wants text input ...

Conflicts:
	imgui.cpp

InputText: intentionally ignore character input when ctrl/alt are held (not sure if correct) (#279)

Build fix

ImHash: defaults seed to zero + comment.