Added IMGUI_DISABLE_STB_***_IMPLEMENTATION

IMGUI_STB_NAMESPACE define Stb stuff in a namespace (trying stuff to reduce problems with multiple implementations)

Documentation

Notes, todo items

Warning fixes for 64-bit architectures

Added stub for obsolete GetDefaultFontData() to help the user upgrading

Comments

ImFontAtlas: some more optimisations / cleanup.

ImFontAtlas: reduced number of temporary allocation when building lots of input ranges

Fix handling of NULL GlyphRanges. Asserting on AddFontFromFileTTF() failure.

Removing the binary_to_c() comment, link to license for ProggyClean

Renamed FontAtlas to Fonts. Further cleanup/comments.

Fixed more clang warnings + AddFontFromMemoryTTF() not honoring font_no parameter

Fixed clang warnings

Merge remote-tracking branch 'origin/master' into 2015-01-truetype

ImFont: small optimization to our (incorrect) handling of TAB ...

TAB is still handled as 4-spaces width (which is incorrect)
But CalcTextSize is simplified.

Comments on new API

ImFontAtlas allows loading multiple fonts into same texture. Revamped new init API for 1.30

Fixed alignment of ColorEdit4() label

Removed PixelCenterOffset, uncesssary

Fixed lower-right rounded triangle rendering precision. ...

PixelCenterOffset is handled very inconsistently, needs to be fixed.

Font fixes for horizontal centering within frames

ImDrawList merging commands with same texture

PushFont/PopFont changes texture at high-level in current draw list - faster

Added PushFont/PopFont API

Commenting asserts.

Fix usage of multiple Begin/End pair for the same window, handling of move in End() was stealing Active ID

Merge remote-tracking branch 'upstream/master' into 2015-01-truetype ...

Conflicts:
	imgui.cpp
	imgui.h

Tooltip always auto-resize. May look into max-over-xx-seconds policy later.

Allow SetNextWindowPos() to affect tooltips.