set via db options "db_convert_type" as array with "on", "json", "numeric",
"bytea"
"on" only converts know good types: "bool", "int"
"json" will convert json/jsonb to array
"bytea" will decode escaped bytea to string (note: this might change to resource)
"numeric" will convert to float.
NOTE: if a numeric number is too large a covnersion might drop data.
Use with care.
Convert flags can be chagned with dbSetConvertFlag and dbUnsetConvertFlag
All convert flags are in "DB\Options\Convert" as enum.
ee62bd98ee