Make requests.exceptions.<arbitrary exception> work as expected for scrapi.requests
Make requests.exceptions.<arbitrary exception> work as expected for scrapi.requests

[#SHARE-32]

erinspace/scrapi,felliott/scrapi,fabianvf/scrapi,CenterForOpenScience/scrapi,CenterForOpenScience/scrapi,mehanig/scrapi,alexgarciac/scrapi,felliott/scrapi,mehanig/scrapi,fabianvf/scrapi,erinspace/scrapi