Breaking change.
Going forward, PT's default serializer (PaperTrail::Serializers::YAML)
will use `safe_load` unless `ActiveRecord.use_yaml_unsafe_load`.
PT users are required to configure `ActiveRecord.yaml_column_permitted_classes`
correctly for their own application. Users may want to start with the following
safe-list:
```ruby
::ActiveRecord.use_yaml_unsafe_load = false
::ActiveRecord.yaml_column_permitted_classes = [
::ActiveRecord::Type::Time::Value,
::ActiveSupport::TimeWithZone,
::ActiveSupport::TimeZone,
::BigDecimal,
::Date,
::Symbol,
::Time
]
```
* 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>
Jared Beck