Style editor: colors list inside a scrolling region

General fixes of Columns() api. User has more flexibility in the way to fill cells.

Fixed compatibility with std::vector if user decide to #define ImVector

Fixed comment

More fixes for ultra pedantic Clang -Weverything

Using sqrtf, cosf, sinf. Made STB_TEXTEDIT_ implemtations static. Tweaks.

Merge pull request #83 from emoon/master ...

Fixed Clang warnings

Fixed more Clang warnings

Fixed Clang warnings

Commenting unnecessary strlen calls that could be removed for speedup

Default 'text_end' parameter for low-level AddText/CalcTextSizeA functions

Fixed punctuation.

Added IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT

OpenGL example: uses offsetof() macros for vertice definition instead of hardcoded offsets

OpenGL example: made the render function save/restore OpenGL state properly-ish

Cleanup and TODO list items

Fixed unaligned memory access - fix font loading when building on Emscripten

Added assert to catch font data loading failure in a location that's easier to understand

Added assert to catch users using Begin/End without a first NewFrame

Warning fixes (now testing with Clang)

Merge pull request #77 from ybunyak/master ...

Fix namespaces for Value() and Color() functions.

Fix namespaces for Value() and Color() functions.

Added INDEX to top of imgui.cpp ...

Explicit namespace prefix on all ImGui:: functions.
Fixed some typos.

PushTextWrapPos() defaults to 0.0

Fixed lines clockwiseness to be consistent with other primitives.

Version number

Added PushStyleVar(),PopStyleVar() helpers. ...

BeginChild() allows to specify negative sizes to specify "use remaining minus xx".
Added a simple example console into the demo window.

Renamed IsHovered() to IsItemHovered()

Added dummy IMGUI_API definition in front of entry-points for silly DLL action

Added GetContentRegionMax() supporting columns. Some bug fixes with using columns.