Exceptions are silenced in Model.get() and Model.delete()

Currently, when calling delete() or get() on a Model and an error occurred, it is silently bypassed.

The delete() mehtod's behaviour is a lil better; at least it prints the error to stdout. But get() completely silences the error.

This is sometimes a bit frustrating when debugging, as one has to step into the library's code before you will be able to tell exactly which exception is causing a delete() or most of the time, a get(), to fail.