The :wab mode ignores all options except the indent option. Performance of
this mode is slightly faster than the :strict and :null modes. It is included
to support the WABuR project.
Options other than the indentation are not supported since the encoding and formats are defined by the API that is used to encode data being passed from one components in a WAB system and allowing an option that would break the data exchange is best not supported.
The mode encodes like the strict mode except the URI, Time, WAB::UUID, and BigDecimal are supported.