MEDYAN.sever_fila!

Tuple{MEDYAN.Context, MEDYAN.FilaMonoIdx}

sever_fila!(c::Context, place::FilaMonoIdx)::Tag{FilaTipIdx}

Return the tag of the new filament plus end.

The split will happen between place and the monomer slightly towards the minus end.

The split cannot create a filament with less than 2 monomers.