Fix lists of lists or dicts for from_dict
Fix lists of lists or dicts for from_dict

SymbiFlow/pycapnp,rcrowder/pycapnp,rcrowder/pycapnp,SymbiFlow/pycapnp,jparyani/pycapnp,SymbiFlow/pycapnp,tempbottle/pycapnp,rcrowder/pycapnp,tempbottle/pycapnp,SymbiFlow/pycapnp,tempbottle/pycapnp,jparyani/pycapnp,jparyani/pycapnp,rcrowder/pycapnp,jparyani/pycapnp,tempbottle/pycapnp