Merge branch 'develop' into feat/drng-ontology

packages/binary/messagelayer/tangle/approver.go

packages/binary/messagelayer/tangle/missingmessage.go

packages/binary/storageprefix/storageprefix.go

packages/binary/valuetransfer/tangle/attachment.go

packages/binary/valuetransfer/tangle/consumer.go

packages/binary/valuetransfer/tangle/tangle.go

.../binary/valuetransfer/tangle/transactionoutputmetadata.go

packages/binary/valuetransfer/transaction/output.go

packages/binary/valuetransfer/transaction/output_test.go

packages/binary/valuetransfer/transaction/transaction.go