CollapsingHeader() with close button adapt to horizontal scrolling (#600)

Fix selectable/tree node not reaching right-side of contents size when horizontal scrolling is active and no explicit size is known

Fixed GetWindowContentRegionMax() being off by ScrollSize amount when SizeExplicit is set + caching ContentsRegionRect. ...

Relates to horizontal scrollbar, explicit contents size

Comments (#676, #655)

Demo: Tree: showing how to align tree node label with current x position (#324, #581)

Added optional Indent() Unindent() width (#324, #581)

Added TreeAdvanceToLabelPos() (#581)

Comments

TreeNodeEx(): ImGuiTreeNodeFlags_AlwaysOpen->ImGuiTreeNodeFlags_Leaf, + added ImGuiTreeNodeFlags_Bullet (#324, #581)

Comments

Demo: fixed multi-selection tree nodes demo to not replace selection when clicking on single-item that's already part of selection (#581)

SetNextWindowSizeConstraint -> SetNextWindowSizeConstraints (#668)

BeginMenu: a menu that becomes disabled when open gets closed down, facilitate user's code (#126)

Comments (#335)

Speculative 64-bit warning fix (#668)

Fixed compile issue (bloody git stashes) (#668)

Added SetNextWindowSizeConstraint() + demo code (#668)

Comments

Minor sizing refactor, should be no-op. Making it a commit for further bisection since sizing code is super brittle. (#668)

Resizing window doesn't rely on MouseDelta anymore, but rather recompute expected size based absolute mouse coords. (#668) ...

Storing ActiveIdClickOffset to generalize pattern already used by
columns.

Minor bits

Merge pull request #666 from jslee02/patch-1 ...

Fix minor typo in examples/README.txt

Fix minor typo in examples/README.txt

ImFontAtlas: Tweak to allow MergeMode to apply on a font that isn't the previous one, by setting the DstFont field.

CheckStacksSize() added literal strings in IM_ASSERT calls to reach end-user on common failure

Including limits.h again to get INT_MAX, assuming previous report of missing limits.h was erroneous (#1, yes, issue ONE!)

Added NewLine() (very shy reminder that #97 isn't done)

Build fix

ImGuiListClipper comments (#660, #661, #662)

InputText(): Fixed cursor rendering on first character when framepadding is 0.0 (following #601)