Iris Calliope

cosmetic changes

adata list fix until we have an index

update docu

remove no_arc error/warning messages (-2 lines of code)

replace no_arc with rig argument: select rigs to check, exclude rigs to check with ~ABC. yeayea... it wasn't one line of code (remove 3 add 5)

attempts to apply view_stack to open figures, move from private repo

minor fixes and minor new functionalities

bugfix

bugfix with 'newest' and 'oldest' number of files

implement 'flatten' argument