Add try catch around subscription callback invocations. Add support for subscription callback error handlers. Provide a default error handler that will report subscription exceptions as console.warning or console.log when available.
Atoning for my sins against performance - subscriber try/catch happens only by opt-in via catch or logError
Updated build assets
Removed basic build. Resolves #75 from @arobson (adding ability to wrap subscriber invocations in try/catch). Bumped version info to 0.10.0