- when printing the cells of the view, we look for escape codes, and
  update the attributes of the cell accordingly. This is done via the
  escapeIntepreter struct and methods
- add a colors.go example

The code currently only supports the 8 basic colors, and bold,
underscore and reverse.

Make the escape interpreter global to the whole printing of the view,
not just the current line, so that the context isn't reset when we move
to a new line