Bridge Monitor provides a simple tool to monitor and cache a bridge's data for easy, efficient access by other routines. It is safe for multi-threaded use and can be closed manually or whenever the bridge is destroyed.
It is created by passing a bridge handle in. The bridge should already exist for this to be operational, and initial data is loaded when the monitor is created.
There are two method for consuming the data. Data() provides arbitrary access
to the cached bridge data while Watch() provides a channel over which the
bridge data will be sent whenever updates are made.