RSQLite 2.2.10

Features

• Upgrade bundled SQLite to version 3.37.2 (#403).

Documentation

• Explain reason for bundling SQLite sources.
• Add known SQLite authors to DESCRIPTION.

Internal

• Add test for interrupt behavior in sqliteSetBusyHandler() (#401).
• Make method definition more similar to S3. All setMethod() calls refer to top-level functions (#396).