Uplink-python

Changelog:
* Changes made according to latest libuplinkc v0.31.6
* Added support for MacOS.

Changelog:
* Changes made according to latest libuplinkc v0.28.4
* Added get_file_size example function in helloStorj.py to check object size on storj to download.
* Added restrict_scope function.
* Added example for using scope key to access object on Storj in helloStorj.py

Changelog:
* Changes made according to latest libuplinkc v0.27.1
* Changed get_encryption_access return type from ctype pointer to string.
* Changed open_bucket parameters to take serializedEncryptionAccess as string instead of ctype pointer.
* Added functions related to access_scope.
* Added example for functions new_scope, parse_scope, etc in helloStorj.py