Continuation Core and Toolboxes (COCO) Code

corrected order of adjoints

minor edit

correction to handle status=repeat

minor update to svds option

corrected naming of adjoint continuation parameter

minimal edits to 'po' adjoint files and draft implementation of adjoint support for 'hspo'

corrected typo in derivs function

added support for choosing active parameter for fold detection and made construction consistent with new implementation of 'all' option

include support for second derivatives of vector fields, event functions, and reset functions.

updated to new coco_add_functionals syntax. This is not backward compatible, but no usage in recipes