Wrap exceptions in an IntrinioException as per ServiceStack.Stripe style?

[daleholborow]

https://github.com/ServiceStack/Stripe/blob/master/src/Stripe/StripeGateway.cs

should probably catch exceptions (in those sections that throw them, these seem to be a bit mix-n-match in terms of failing silently vs throwing webexceptions), and wrap into an Intrinio-specfic exception wrapper, similar to the stripe example?

Or possibly simply catch and return empty response objects, so that ALL api wrapper calls shouldnt throw exceptions