check generated documentation

fix manual for operator>>

manual filtered bbox kernel, ref counting

manual orientation: NO (only when points have same delta, so don't document)

clean manual AK (concepts like Polynomial_1_2, access to a() b() c() ? used in solve to check that solutions are the same)

rendre Bbox filtered kernel completement generique -> utilisation dans linear kernel aussi

echecs de filtres

voir make_x_monotone pour que ca retourne des arcs (necessite bricolage de la traits car Arr_2 demande des Object)

interface intersect avec plusieurs outputIt types (types de retour differents)

--> a transferer dans linear kernel ?

unoriented equal (pb general orientation dans noyau cgal...)

construct intersection for arcs should use solve or solve in range

done (?)

memory leaks in Filtered_bbox_circular_kernel_2

from Andreas: there are new statements in constructors having no corresponding delete statements. This concerns the files in the directory: CGAL-3.3.1/include/CGAL/Filtered_bbox_circular_kernel_2/...with_bbox_2.h It should be enough to add destructors and add conditional deletes.

Reading the code I think that the IO routines also don't do what they should do, namely computing new bboxes.