Individual item text and background colors can now be set.
Fixed redraw bug on background change
Another fix for forcing row redraw for setting text color.
Removed boolean flags and switched text/bk specs to using COLORREFs for TreeList.
Merge pull request #2 from ArmstrongJ/treelist-highlight

[TREELIST] Allow setting background and text colors of individual items
[TREELIST] Remove outdated stuff in docs.