Added IsRootWindowFocused(), IsRootWindowOrAnyChildFocused(). Renamed GetWindowIsFocused() to IsWindowFocused()

Child window don't take focus when they first appear (focus left to parent)

Added io.KeyAlt + support in examples apps ...

Currently unused but supported by sample so that more people will have
it set up when menus needs them

WIP marker in uppercase.. (#127)

Update version number, added IMGUI_VERSION, ImGui::GetVersion() (#127)

Fixed more warnings from @bkaradzic

Fixed warnings

Version number

Examples: reference implementations honors drawlist user callbacks.

Examples: README direct the user to the opengl_example

Examples: OpenGL 2/3 examples cleanup to match DirectX9/11 structure.

Examples: DirectX9 example cleanup to match DirectX11 structure.

Examples: DirectX11 example application handles window resizing.

Examples: DirectX9 example application handle window resizing.

Examples: Fixed readme file.

Examples: Refactored directx11_example to be easier to copy & paste into user application.

Examples: Clang warning fix.

Examples: Makefile fixes.

Examples: Clang/Linux warning fixes.

Examples: Tweaks.

Examples: Refactored directx9_example to be eaasier to copy & paste into user application.

Examples: shallow tweaks to match upcoming other examples.

Examples: Rename globals again

Examples: Moved gl3w to opengl3_example directory + fixed msvc project paths

Examples: Makefile

Examples: Rename global to be more consistent

Examples: Refactored opengl3_exapmle into a glfw specific file that can be copied and pasted

Examples: Refactored opengl_example into a glfw specific file that can be copied and pasted. ...

Other examples will follow.

InputText() handles buffer limit correctly for multi-byte UTF-8 characters (fix #158) ...

We now maintain the buffer len for both UTF-8 and wchar

Fixed UTF-8 decoding errors leading into infnite loops (#158)