Update cloudpickle requirement from <=1.4.1,>=0.8 to >=0.8,<1.6.1

[dependabot]

Updates the requirements on cloudpickle to permit the latest version.

Changelog

Sourced from cloudpickle's changelog.

1.6.0

• cloudpickle's pickle.Pickler subclass (currently defined as cloudpickle.cloudpickle_fast.CloudPickler) can and should now be accessed as cloudpickle.Pickler. This is the only officially supported way of accessing it. ([issue #366](cloudpipe/cloudpickle#366))

• cloudpickle now supports pickling dict_keys, dict_items and dict_values. ([PR #384](cloudpipe/cloudpickle#384))

1.5.0

• Fix a bug causing cloudpickle to crash when pickling dynamically created, importable modules. ([issue #360](cloudpipe/cloudpickle#354))

• Add optional dependency on pickle5 to get improved performance on Python 3.6 and 3.7. ([PR #370](cloudpipe/cloudpickle#370))

• Internal refactoring to ease the use of pickle5 in cloudpickle for Python 3.6 and 3.7. ([PR #368](cloudpipe/cloudpickle#368))

1.4.1

• Fix incompatibilities between cloudpickle 1.4.0 and Python 3.5.0/1/2 introduced by the new support of cloudpickle for pickling typing constructs. ([issue #360](cloudpipe/cloudpickle#360))

• Restore compat with loading dynamic classes pickled with cloudpickle version 1.2.1 that would reference the types.ClassType attribute. ([PR #359](cloudpipe/cloudpickle#359))

1.4.0

This version requires Python 3.5 or later

• cloudpickle can now all pickle all constructs from the typing module and the typing_extensions library in Python 3.5+ ([PR #318](cloudpipe/cloudpickle#318))

... (truncated)

Commits

• d3279a0 MNT release 1.6.0
• 8653e25 MNT add changelog entry for #384
• 927a315 CLN remove trailing whitespace in changelog
• a3d2a19 Compatibility: expose cloudpickle.CloudPickler also as cloudpickle.Pickler (#...
• 4510be8 Add pickling of dict_keys, dict_values, dict_items (#384)
• da2a604 back to dev mode
• f1298d2 release 1.5.0
• 2ca63e9 add a missing changelog entry for #368
• 508cdf1 Optionally use pickle5 (Redux) (#370)
• 938553f deduplicate cloudpickle reducers. (#368)
• Additional commits viewable in compare view

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[dependabot]

Dependabot tried to add @pugangxa as a reviewer to this PR, but received the following error from GitHub:

POST https://api.github.com/repos/DavidSpek/fairing/pulls/11/requested_reviewers: 422 - Reviews may only be requested from collaborators. One or more of the users or teams you specified is not a collaborator of the DavidSpek/fairing repository. // See: https://docs.github.com/rest/reference/pulls#request-reviewers-for-a-pull-request

[dependabot]

Superseded by #46.