v5.6.0

Improvements

• Add event polling functionality @lgarber-akamai (#293)

Development Infrastructure

• Add PR head commit hash check @ykim-1 (#298)
• Update PyPI publish action @zliang-akamai (#299)
• Remove directly call to setup.py @zliang-akamai (#300, #304)

Tests

• Add integration tests @ykim-1 (#240)
• Add integration tests for Linode Client retry @ykim-1 (#294)
• Update README and workflow_dispatch @ykim-1 (#295)
• Move unit tests into separate directory and modified tox.ini @ykim-1 (#297)