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

Nav: Updated TODO list.

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.

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)

Nav: Refactor NavMoveResult** flags into ImGuiNavMoveResult structure as we are going to want two instances of it. (#787) (+1 squashed commits) ...

+ store window inside result.

Internals: Nav: Renamed ImGuiNavForward enum (#787)

Merge branch 'master' into navigation

Nav: Comments, added enum to clarify NavForward code. (#787)

Nav: Mouse hovering selectable / menu items only activate them if they are on the active NavLayer. (#787)

Nav: Debug overlay uses default font. (#787)

Examples: Using #include "imgui.h" instead of <imgui.h> appear correct-er as per standard? xcode+clang are very nitpicky there.

Examples: Makefile leave CXX alone, instead leave commented out options. (nb: codeship doesn't seem have clang++)

Examples: Use Clang in old Makefile.

Examples: Synced Makefile comments. Added build/ folder into git ignore list/

Examples: Apple: Fixed filenames in OSX xcode project.

Examples: Vulkan: FIxed warnings in 32-bit modes (vulkan uses VkDeviceSize which is always 64-bit long)

Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)

imconfig.h comments

ImVector comment (#1577)

Merge branch 'master' into navigation

Scrollbar: Fix for ScrollbarY enable check after ScrollbarX has been enabled. (#1574) Looks like a bug introduced in c36e586.

Scrollbar: Fix ScrollbarX enable test subtracting WindowPadding.x. This has been here since 65a191c (#246) tho at the time it is possible that SizeContents wasn't calculated as evenly. ...

Test: auto-resize with: ImGui::Begin("Test", NULL, ImGuiWindowFlags_HorizontalScrollbar); ImGui::Button("##xxx", ImVec2(500,500)); ImGui::End();