REL: v3.1.3 This is the final planned release of the 3.1.x series. This release contains several critical bug-fixes: - suppress a warning with Pandas 1.0 - support pillow >= 7 - support dateutils >= 2.8.1 - prevent an infinite recursion - do not clobber non-python registered signal handler - fix path intersection computation with 0 length segments - fix performance regression in draw_idle - several minor bugs