Added version number in sources

Minor tweaks to "Memory override" pull request

Delete obsolete comments in imconfig.h

Fixed ImGuiTextFilter triming of leading/trailing blanks. Documented …

…"Filtering" section of demo better.

Todo list

Fixed floating-point precision issue making the right-side value of a…

… plot sometimes wrap to the left-side value.

Fix for doing multiple Begin()/End() during the same frame

Fixed combo box (bug introduced earlier today) + adding bit of vertic…

…al padding in combo.

OpenGL example now use the fixed function-pipeline. Code down by 120 …

…lines.

Portability fixes to OpenGL example application (courtesy of djoshea)