Some minor updates to the Swift library (mirrored here [apocolipse/thrift-swift](https://github.com/apocolipse/thrift-swift) for package management usage) Updates are backwards/forwards compatible with Swift ¾ Swift native tests added as well
[ Full content available at: https://github.com/apache/thrift/pull/1588 ] This message was relayed via gitbox.apache.org for [email protected]
