Added handling of non-string types to avoid exception when trying to encode.  Fixes #217.
Added handling of non-string types to avoid exception when trying to encode.  Fixes #217.

adityadharne/TestObento,gwu-libraries/obento,gwu-libraries/obento,gwu-libraries/obento,adityadharne/TestObento,adityadharne/TestObento,adityadharne/TestObento,gwu-libraries/obento