v3.5.0

Features

• add decimal validation for numeric precision and scale supported by Spanner (#340) (aa36c5e)
• add progress field to UpdateDatabaseDdlMetadata (#361) (1c03dcc)
• add query statistics package support (#129) (6598dea)

Bug Fixes

• an Aborted exception isn't properly retried (#345) (e69e6ab)
• correctly classify select statements that begin with brackets (#351) (d526acc)
• update to support the open-telemetry status code spec change (#358) (0f894f1)