Respect requirements in setup.py

Add requirements to setup.py

Remove '.cache'

Add manifest file to include README.md in package

Fix HTTP body none issue

Update API endpoint URLs

Bugfix: Only use OAuth client if it's actually set

Replace 'print' statement with call to logger

Allow passing parameters of type long when an int is expected.

The test, test_parameter_type_long, added in commit cde2a133, now passes.

Add a new test, test_parameter_type_long, which demonstrates that passing parameters of type long when an int is expected, causes an exception.

ERROR: test_parameter_type_long (test.test_core.CoreTests)
...
ValueError: Bad value for parameter limit of type 'int' - 5