Release 5.5.0

Added

• RP class in reportportal_client.client module as common interface for all ReportPortal clients, by @HardNorth
• reportportal_client.aio with asynchronous clients and auxiliary classes, by @HardNorth
• Dependency on aiohttp and certifi, by @HardNorth

Changed

• RPClient class does not use separate Thread for log processing anymore, by @HardNorth
• Use importlib.metadata package for distribution data extraction for Python versions starting 3.8, by @HardNorth
• helpers.verify_value_length function updated to truncate attribute keys also and reveal attributes were truncated, by @HardNorth

Removed

• Dependency on six, by @HardNorth