Docking: Hold Shift to force disable docking. (#2109)

Tests: Added hook/tweaks for imgui-test engine. + Fixed warnings.

Merge branch 'master' into docking ...

# Conflicts:
#	imgui_demo.cpp

Internals: Merge minor things from range_select branch. Added ImGuiButtonFlags_NoHoveredOnNav. Added IsItemToggledSelected() - unused here. Renaming.

Docking: Fixed an issue where newly created dock node override hosted window pos/size (#2109, #2386)

Merge branch 'vulkan_fix_docking' into docking

Merge branch 'master' into docking ...

# Conflicts:
#	examples/imgui_impl_vulkan.cpp

FAQ tweaks. Add missing entries in imgui.cpp (which until now where only in the README).

Merge branch 'vulkan_fix_master' into vulkan_fix_docking

Misc: Added IM_MALLOC/IM_FREE macros mimicking IM_NEW/IM_DELETE so user doesn't need to revert to using the ImGui::MemAlloc()/MemFree() calls directly.

Misc: Added IM_MALLOC/IM_FREE macros mimicking IM_NEW/IM_DELETE so user doesn't need to revert to using the ImGui::MemAlloc()/MemFree() calls directly.

Vulkan, Viewports: ImGui_ImplVulkan_RenderDrawData and renderer back-end automatically manage ImGui_ImplVulkanH_WindowRenderBuffers for each viewports so user doesn't have to do it. (#2461, #2348, #2378, #2097)

Merge branch 'master' into docking

Viewport: Fixed PushClipRectFullScreen() missing out on negative coordinates. Among other things, the outer highlight during CTRL+Tab wouldn't appear in negative coordinates monitors. (~#2176, #1542)

Tabs to Spaces, comments.

Merge branch 'master' into docking ...

# Conflicts:
#	examples/imgui_impl_dx9.cpp
#	examples/imgui_impl_opengl3.cpp

InputText: Work-around for buggy standard libraries where isprint('\t') returns true. (#2467, #1336) ...

Not using isprint. + todo items.

Docking: Fixed focus restore lagging by a frame when a tab stops being submitted. (#2109) Building on a little build of technical debt there, should transition toward a more general docking-agnostic system (#2304)

Viewport: Renamed member + added note about a Docking issue with restoring focus.

Docking: Remove code in BeginDocked() to set HiddenFramesCannotSkipItems based on upcoming tab bar selection, solely based on focus (might break something subtle?). Follow-up to c355ed1. (#2453, #2109)

Docking: Disable SkipItems when directly/programmatically focused (possible generalization of code currently in BeginDocked which relies on tab bar interaction, will remove that code in next commit). (#2453, #2109)

Merge branch 'master' into docking ...

# Conflicts:
#	docs/CHANGELOG.txt
#	imgui.cpp

Internals: Renamed the ImGuiWindow HiddenFrameXXX fields to decorrelate them from resizing behavior, as those values are set by other logic.

Docking: Added ImGuiDockNodeFlags_NoTabBar (not exposed publicly). (#2423, #2109)

Docking: Internals: Moved CentralNode and HiddenTabBar state into LocalFlags for consistency. (#2423, #2109)

Docking: Separating SharedFlags vs LocalFlags in dock node so settings can be applied to individual nodes. Made _NoResize logic on single node applies as expected. (#2423, #2109)

Docking: Fix DockBuilderAddNode() not storing flags when creating floating node.

Renamed ImGuiDockNodeFlags_Dockspace to ImGuiDockNodeFlags_DockSpace for consistency. DockBuilderCopyDockspace() to DockBuilderCopyDockSpace(). Made casing consistent elsewhere. (#2109)

Docking: Renamed ImGuiDockNodeFlags_PassthruDockspace to ImGuiDockNodeFlags_PassthruCentralNode. + Comments, shallow tweaks. (#2109)

Docking: Tweak and silencing PVS studio static analyzer (back to zero warnings among our selected ones).