added verry basic serializer for transactions
added verry basic serializer for transactions

zimmerman-zimmerman/OIPA,tokatikato/OIPA,openaid-IATI/OIPA,zimmerman-zimmerman/OIPA,tokatikato/OIPA,bryanph/OIPA,tokatikato/OIPA,bryanph/OIPA,openaid-IATI/OIPA,zimmerman-zimmerman/OIPA,zimmerman-zimmerman/OIPA,openaid-IATI/OIPA,bryanph/OIPA,zimmerman-zimmerman/OIPA,openaid-IATI/OIPA,openaid-IATI/OIPA,bryanph/OIPA,tokatikato/OIPA