* Make paper_trail work with Rails 7.0
* from class_methods do back to module ClassMethods
* add spec for PostgresArraySerializer to boost coverage
* lint the spec for PostgresArraySerializer
* lint the spec for PostgresArraySerializer again
* and now make that linted spec pass again
* test object change scopes a bit
* round out json and jsonb testing of object scopes
* test some other code paths to increase coverage
* linting
* linting
* mess with yaml loading in test
* oddball cop for double quotes
* use Rails public API for compatibility rather than instance_variable_set
Co-authored-by: dfurber <dfurber@truecar.com>
