Internals: ImRect::Contains(ImRect&) include boundaries (whereas Contains(ImVec2) should not).

Added SetNextWindowBgAlpha() helper. (#1567) particularly helpul with the marking of the old 5-parameters version of Begin() as obsolete.

Internals: Exposed SetCurrentFont() in imgui_internal.h

Internals: Moved unnecessary MovingWindowMoveId field.

ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple context. Also remove the last remaining undesirable dependency on GImGui in imgui_draw.cpp, finishing the work recently done with ImDrawListSharedData. Hurra! (#939)

Drag and Drop: Fix comment. Removed IMGUI_PAYLOAD_TYPE_DOCKABLE from master branch. (#143)

InputText: Minor tweak.

Internal: DrawData: Tidying, renaming.

Internals: DrawData: We don't need an intermediate layer for popups.

Internals: DrawData: Refactored chunks into a ImDrawDataBuilder we can reuse.

MIssing IMGUI_API for a type with non-inline methods.

Internals: DrawData: renamed fields only (committing separately so that next commit is less nosiy).

MovingWindow: Track click offset based on MovingWindow and not its RootWindow. Followup to 3849bb4. Comments + adding a local to ease patch #1345.

Internals: Merge of harmless stuff from Navigation stuff. Added GetHoveredID() internal helper.

Internals: Initializing fields in same order as declaration order + fixed uninitialized DragDropAcceptIdCurrRectSurface (was harmless)

Internals: Rect: Added ClipWillFull helper + comments on variations.

Internals: ImVec2 versions of ImMin, ImMax inline float version for a faster full-on-debug-no-inline experience.

OpenPopup(): Always reopen existing popup. Removed OpenPopupEx() bool reopen_existing which is always true. This also makes the public API on par with OpenPopupEx(). (#1497, #1533)

Popups: Gently handle the user mistakenly calling OpenPopup() every frame. (when reopen_existing is true). (#1497)

Internals: Popup: Renaming fields.

Popup, Menus: Tweaks and comments.

Internals: Popup: Explicitely setting up ImGuiPopupRef reduces confusion.

Internals: Popup: Separating MousePosOnOpen and PopupPosOnOpen. They are equal in the master branch but different in the navigation branch.

Revert "Internals: Added LastActiveId, LastActiveIdTimer. (#1537)" Will come up with a better design later. ...

This reverts commit 007f403.

Internals: Added LastActiveId, LastActiveIdTimer. (#1537)

Merge of minor left-overs from private work branch to reduce drifts. Should be functionally a no-op.

Internals: Settings api tweaks

Internals: Renamed ImGuiSimpleColumns to ImGuiMenuColumns to avoid confusion. Reduced internal buffer size (we only use 3 slots).

Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.

Internals: NextWindow: Renamed, moved functions to member.