Cloud-mappings

What's Changed
* Added a new `read_blindly_error` flag by JJ11teen in https://github.com/JJ11teen/cloud-mappings/pull/14


**Full Changelog**: https://github.com/JJ11teen/cloud-mappings/compare/v1.1.0...v1.2.0

1. Upgrade dependency versions
2. Python support: drop 3.6, add 3.10
3. Fix: https://github.com/JJ11teen/cloud-mappings/issues/12

Patch release since v1 API updates, and version bumped for an actual release

Patch release since v1 API updates
EDIT: this release failed due to version number not being bumped, functionality released as v1.0.2

Serialisation has been brought into the cloud-mappings primary logic, as cloud-mappings is often used with serialisation. This removes zict as a dependency.

Additionally, the cloud-mapping API has been finalised enabling major version 1 to be released!

As part of moving towards a v1 release, doc strings have been added to the public API