Fixed rmccue/requests dependency

Fixed handling of timeout on connecting to the API

Added support for user properties. Automatically split Batch with mor…

…e than 10k requests to multiple Batch requests. Added cascadeCreate parameter to Set item/user values.

Allow setting of timestamp item values with DateTime

Added distinctRecomms parameter to batch request

Merge pull request recombee#1 from dudla/fix/remove-echo

client shouldn't use echo on exception

Added cascadeCreate parameter to merge users request

Updated tests

Support returnProperties and includedProperties parameters of recomme…

…ndation requests

Timestamp is now optional parameter when deleting an interaction. cas…

…cadeCreate and scenario parameters for recommendations. Choosing of HTTP/HTTPS protocol for requests.