Capture original exceptions

[rsanheim]

We are dropping the original exception on the floor here:

https://github.com/mojombo/bertrpc/blob/master/lib/bertrpc/action.rb#L64

This would be useful for knowing exactly where the reset is happening from.

/cc github/github#7212

[rsanheim]

The errors actually have the ability to capture original exception, we would have to pass it up the inheritance chain though.

https://github.com/mojombo/bertrpc/blob/master/lib/bertrpc/errors.rb#L14

[josh]

2 years later we have Exception#cause.

[rsanheim]

Hah. Shout out to two year old issues.