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Added sample gif, removed section about performances (unnecessary)

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Fixed warning: variable ‘L1’ set but not used [-Wunused-but-set-variable]

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Contributing guidelines for issues

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Comments (#1230, #1611)

Merge branch 'master' of https://github.com/RandyGaul/imgui into RandyGaul-master

stb_rect_pack: update to 0.11 (minor changes)

__cdecl markup for non-standard calling conventions via MSVC

Internals: Moved some of NewFrame() into UpdateMovingWindow().

Added IsAnyMouseDown() helper. ...

Examples: DirectX9/10/11: Using IsAnyMouseDown() instead of local function.

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Internals: Clarified internal storage for RootWindow with specific semantic (the Docking branch will need to introduce finer differenciation there.)

Styles: Comments and re-ordered.

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README update, updated binaries, sponsors

Examples: Vulkan: Fix (something changed in GLFW not including vulkan.h, was unwillingly relying on that)

Warning fix. (#1565)

Updated version to 1.60 WIP to emphasis on the addition of required calls CreateContext/DestroyContext + merged the massive Navigation branch (#1565, #787)

Merge branch 'context' ...

# Conflicts:
#	examples/allegro5_example/main.cpp
#	examples/directx10_example/main.cpp
#	examples/directx11_example/main.cpp
#	examples/directx9_example/main.cpp
#	examples/marmalade_example/main.cpp
#	examples/opengl2_example/main.cpp
#	examples/opengl3_example/main.cpp
#	examples/sdl_opengl2_example/main.cpp
#	examples/sdl_opengl3_example/main.cpp
#	examples/vulkan_example/main.cpp

Merge branch 'navigation'