ajlopez/SimpleBus — pull request #2 by remster (2014-08-01 12:03:35+00:00)
Title: allow for error handling

We (me and sidrees) found your library helpful, but missing out on the error handling, which we desperately need. I asked sidres to propose a change, but he appears to have missed a spot. Here's a more generic approach with a test case.

For the life of me, I did not find time to find out why on error callback is called twice.