ReadTracer prints all method names to a trace log.

WriteTracer prints all method names to a trace log.

QueryWrapper is a wrapper around go's sql.DB and sql.Tx types so we can override the calls with trackers (e.g.: DebugQueryWrapper).

StmtWrapper is a wrapper around go's sql.Stmt type so we can override the calls with trackers (e.g.: DebugStmtWrapper).