v1.39.0

Features

• add http.status_code attribute to all Spans that have at least a low level http response (#986) (fb02042)

Bug Fixes

• deprecate obsolete utility methods (#1231) (8f95371)
• fix buildRequest setUrl order (#1255) (97ffee1)
• refactor to use StandardCharsets (#1243) (03ec798)
• remove old broken link (#1275) (12f80e0), closes #1278
• remove unused logger (#1228) (779d383)

Documentation

• Jackson is unable to maintain stable Javadocs (#1265) (9e8fcff)

Dependencies

• update dependency com.google.protobuf:protobuf-java to v3.15.1 (#1270) (213726a)
• update dependency com.google.protobuf:protobuf-java to v3.15.2 (#1284) (dfa06bc)
• update OpenCensus to 0.28.0 for consistency with gRPC (#1242) (b810d53)
• version manage error_prone_annotations to 2.5.1 (#1268) (6a95f6f)