Columns: Fixed bug with indentation within columns, also making code shorter/faster (#414, #125)

Columns: Undo accidental change from 807d4ff

Merge branch 'master' of https://github.com/ocornut/imgui

Columns:: columns set with no implicit id include the columns count into the id to avoid collisions (#125)

Columns: minor tidying up while investigating severe issues with indenting within columns (#414)

Merge pull request #416 from zryan3/bugfix/sdl2_typos ...

Examples:SDL: fixed comment referencing GLFW.

fixed text referencing GLFW library in SDL examples

Update README.md ...

Removed paragraph.

Update README.md

Columns: avoid growing ColumnsData vector when closing a window with no columns (#125) ...

(Will break calling GetColumnOffset() when there's no column but it
would only have worked after the first frame anyway, so basically it
didn't work)

Columns: tidying up, moving OffsetT to a ImGuiColumnData structure

Merge branch 'master' of https://github.com/ocornut/imgui

Rename internal ColumnsStartX to IndentX, makes more sense

Update README.md

Added links

Update README.md - faq

Update README.md - faq

Examples: DirectX9/11: Removed assumption about Unicode build in example main.cpp (#399)

Examples: OpenGL3: Fixed gl3w.c for Linux when compiled with C++ compiler (#411)

Examples: SDL/OpenGL3: Added -ldl to Linux command-line (#411)

Update README.md

InputText: Added password mode via ImGuiInputTextFlags_Password (#237, #363, #374)

Demo: Made the "menu inside a regular window" be in a different menuset. Added a comment (#409)

Examples: Updated README

Merge branch 'zach2good-SDL_OpenGL3_Implementation'

Examples: SDL+OpenGL3: Fixed readme (#356)

Examples: SDL+OpenGL3: Various fixes to example to make it matches current GL3 example (#356)

Examples: SDL+OpenGL3: Using glew like existing example + renaming (#356)

Tweak build batch files and readmes

Merge branch 'SDL_OpenGL3_Implementation' of https://github.com/zach2good/imgui into zach2good-SDL_OpenGL3_Implementation