Internals: Begin: Moved OuterRectClipped/InnerMainRect/InnerClipRect computation higher up in the function, next to ContentsRect/WorkRect code. Removed commented out debug drawing code which is now available in Metrics window.

Window: Fixed contents region being off by WindowBorderSize amount on the right when scrollbar is active.

Internals: Nav scrolling uses InnerMainRect instead of InnerClipRect.

Merge branch 'master' into docking ...

# Conflicts:
#	examples/example_sdl_opengl2/main.cpp
#	examples/example_sdl_opengl3/main.cpp
#	examples/example_sdl_vulkan/main.cpp
#	examples/imgui_impl_sdl.cpp
#	examples/imgui_impl_sdl.h
#	imgui.cpp

Internals: TempInputText: Rename InputScalarAsWidgetReplacement() -> TempInputTextScalar(), ScalarAsInputTextId -> TempInputTextId, small tidying up in affected functions.

Internals: Using more explicit PushOverrideID() helper + renamed equivalent internal tree helper.

Window: Fixed window with the AlwaysAutoResize flag unnecessarily extending their hovering boundaries by a few pixels (this is used to facilitate resizing from borders when available for a given window). One of the noticeable minor side effect was that navigating menus would have had a tendency to disable highlight from parent menu items earlier than necessary while approaching the child menu. ...

+ Changelog fixed unfinished sentence and tweaks,

MenuItem, BeginMenu: Fix undesirable tall frames in horizontal layout context, which would be visible when trying to use rounded selectable/menus. ...

PushStyleVar: Added comments in the assert message.
Minor tweaks.

Misc comments, internal renaming, added disable indentation option to Columns demo section.

Viewports: Avoid rendering/swapping secondary viewports that are minimized. (#1542, #2496)

Docking: Fixed an issue where DockBuilderSplitNode() wouldn't update the CentralNode shortcut immediately, which was problematic for immediately following DockBuilderDockWindow(). (#2109)

Merge branch 'master' into docking ...

# Conflicts:
#	imgui.cpp
#	imgui.h

Internals: ImHashStr() default parameter.

Added SetNextItemWidth() helper to avoid using PushItemWidth/PopItemWidth() for single items.

Misc: Fixed PushItemWidth(-width) (for right-side alignment) laying out certain items (button, listbox, etc.) with negative sizes if the 'width' argument was smaller than the available width at the time of item submission,

Internals: Rework CalcItemWidth / CalcItemSize but make their similarities and their differences more obvious. (#2449)

Added commentary about ContentRegion functions. Added internal GetContentRegionMaxScreen() to facilitate internal code at the moment.

Internals: Moved CalcItemSize next to CalcItemWidth, added comments to clarify their respective intent. Should have no side effect.

Internals: Columns: Tweaks, renaming. Metrics: Show rectangles for child windows. ...

Renamed SameLine() first parameter.

Columns: Fixed boundary of clipping being off by 1 pixel within the left column.

Clarified asserts comments + todo entries. (#2500)

Metrics: Added "Show windows rectangles" tool to visualize the different rectangles.

Merge branch 'master' into docking ...

# Conflicts:
#	imgui.cpp
#	imgui_demo.cpp

Merged a bunch of small changes from Docking branch to reduce the difference between branches. ...

Noticeable: horizontal alignment of CloseButton. Menu fill take account of border. Various stylistic tweaks to accomodate other changes in Docking.

Internals: Columns: Some renaming, extracted code into GetColumnsID().

Docking: Internal: Added helper for automation to process docking at the mouse level.

Docking: Fixed another issue where the resulting node of a split would sometimes recall the pos/size of previous host window. Spent a whole day adding framework for testing more of docking so hopefully we'll heading toward the magical world of less regressions. (#2109)

Merge branch 'master' into docking ...

# Conflicts:
#	imgui.cpp
#	imgui_internal.h

Internals: Moved resize grips and borders to nav layer 1 so that testing system doesn't attempt to scroll to get them inside the InnerRect.

Docking: Renamed target_node > node in some functions to facilitate debugger watch use across functions.