WHAT'S NEW IN HPDF 1.4

Lot's of contributions from Leon Smith ! Thank you. Here is a summary:

A - Changes by Leon

1 - Huge speed improvement of the draw monad ; 2 - New implementation of shapes (Rectangle, curveto, arcto, point datatype) ; 3 - Cleaning of the API (coordinates, shapes) ;

B - Changes by alpheccar

1 - Lots of bug corrections for typesetting ; 2 - An API to draw text boxes