on_error not used

[af]

Hi, cool project! I'm looking at the supported client-side settings, and while an on_error callback is parsed from the options, it doesn't appear to be used anywhere. Should it be called in the error_handler functions?

[gabipurcaru]

Right! thanks for letting me know, I should fix that, but I'm a bit busy these days. If you want to do it yourself, you can always fork me :)