Fix bug in to_dict not handling which fields properly. Also add
Fix bug in to_dict not handling which fields properly. Also add

exception for fields of type Object, since they're currently unhandled

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