21.0.4

Added support for python 3.9

21.0.3

New functionalities and improvements:

• Use specs just to validate path before call (if validation enabled)
• Change way specs are managed (remove specs models)
• Reorganize help management and improve formatter

21.0.2

Few improvements after processing valuable feedback:

• switch from requests-mock to responses
• Fix ResourceSet for non-paginated endpoints
• switch to single exception.
• fix api reference guide