Nav: Using CTRL+TAB / PadFocusNext/Prev to Focus a window closes the previous window popups. (#787)

Nav: SetFocusID() clears NavInitRequest for consistency (repro would a same frame interaction / race condition). (#787)

Nav: Fixed InitRequest leaking when changing window (repro was to navigate inside File->Options->[Child] then press Left and notice how we would land on parent window on the fist item after the current one). (#787)

Internals: Nav: Extracted code into IsWindowNavFocusable(). (#787)

Nav: Child window is restored on focus when returning to layer 0 or refocusing. This is a little experimental and potentially error-prone right now. (#787, vaguely relate to ~#727) Ideally we should maintain a non-sorted last-focused list that include childs windows.

Nav / Slider: Fixed reaching edge of integer slider with navigation input, bug introduced on January 25 in Nav branch 10a4a77. (#787)

Merge branch 'master' into navigation ...

# Conflicts:
#	imgui_demo.cpp

Internal: Avoid needlessly bringing parent of front-most child back to front. This is mostly to reduce flicker/confusion in Metrics when traversing windows. We could aim at separating the child windows from non-child windows at some point.

Nav: when browsing a window that has no activable items (scroll only) we keep a highlight on the child. (#787)

Nav: Tweak code to be easier to follow + updated todo list after clarifying an issue.

Nav: Fixed initial movement (which sends an InitRequest) from clearing NavDisableHighlight and fully enabling Nav feedbacks. (#787) ...

NB: Setting g.NavInitResultExplicit = false on InitRequest match was added in initial commit c2cb2a6

Log: Comments and extraneous assets to clarify intent. (#1584)

Merge branch 'master' into context

Merge branch 'master' into navigation

Moved extra_fonts/ to misc/fonts/. Moved .natvis file to misc/natvis/ (#1569)

Merge branch 'master' into navigation ...

# Conflicts:
#	imgui.cpp

Style: Enable window border by default. (#707)

Metrics: Minor formatting tweaks

Nav: Removed io.NavUsable --> io.NavActive, io.NavActive --> io.NavVisible. (#787). NavActive takes account of NavFlags enable flags.

Nav: Fixed NavRectRel being cleared for one frame when restoring layer 0 with Alt/Menu key or Escape. Maybe was inconsequential. (#787)

Nav: Removed old unused code. (#787)

Internals: Renaming.

Internals: Renaming.

Nav: window that are filling the entire display/viewport gets their windowing highlight clamped within. (#787)

Nav: Windows with ImGuiWindowFlags_NoBringToFrontOnFocus flag aren't temporarily displayed on the front when using CTRL-TAB. (#787)

Nav: workaround to kindly handle ALT-TAB without detecting TAB-release on backends that clear all keys on unfocus. (#787)

Nav: Added proper version of ImGuiWindowFlags_NavFlattened that handles scrolling nicely. Marked as private as I'm not happy with the name. (#787)

Nav: NavScoreItem uses g.CurrentWindow and not g.NavWindow. This was changed as part of b3cba62 when first trying to implement the NavFlattenedFlag. As it turns out we won't need it. Committing separately for safety. (#787)

Nav: calling NavMoveRequestCancel() more consistently when hijacking a request. Not strictly necessary. (#787)

Nav: Internals: Renamed RootNavWindow to NavRootWindow (#787)