Methods to transform a secondary structure containing pseudoknots into a structure which is pseudoknot-free.
TODO Until a better name is found, this module is home to functions for de-pseudoknotting structures.
TODO Check if there are corner-cases remaining when considering 2-diagrams.
Try to removed pseudoknots from the pairlist. This works by counting for each pair, how many pairs are incompatible with it. Then those with most incompatibilities are successively removed. This function might well remove more than necessary!