0.8.3

Fixes

• (Storage) Allow path in URIs passed to newFileSystem (#1470)
• (Storage) Add a PathMatcher for CloudStorageFileSystem (#1469)
• (Logging) Preventing logging re-entrance at FINE level (#1523)
• (Logging) Set timestamp from LogRecord (#1533)
• (Logging) Initialize the default MonitoredResource from a GAE environment (#1535)
• (BigQuery) BigQuery: Add support to FormatOptions for AVRO (#1576)

SPI layer changes

• use RpcFuture and remove old BundlingSettings (#1572)
• fix DefaultLoggingRpc (#1584)