[ckan-dev] A new ckan client library: ckanapi

[Ian Ward]

I've just released a new version that now comes with a TestAppCKAN class:

https://github.com/open-data/ckanapi#testappckan

Also, I updated the imports so that they fail loudly now if importing
ckan works but importing the exceptions fails.

I think the error/exception types raised by the action functions
should be documented in CKAN's API docs.  There's only a few of them,
it would be nice to know which actions might return which errors.