Features
- Add rule [E3030](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E3030) to use the newly patched spec to check resource properties values. Update the following rules replaced by [E3030](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E3030).
- Delete rule [W2512](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#W2512)
- Delete rule [E2531](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E2531)
- Move allowed values check in rule [E2505](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E2505)
- Add rule [E3008](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E3008) to use the newly patched spec to check a resource properties Ref and GetAtt. Update the following rules replaced by [E3008](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E3008).
- Delete rule [E2502](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E2502)
- Delete rule [W2505](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#W2505)
- Improve rule [E3020](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E3020) to check MX records
CloudFormation Specifications
- Update CloudFormation specs to 2.18.1
- Append the CloudFormation spec to include:
- AllowedValues for resource properties
- Allowed Ref/GetAtts for resource properties
- Add specs for regions `eu-north-1`, `us-gov-east-1`, `us-gov-west-1`
- Add `AWS::StepFunctions::StateMachine` in all supported regions
- Add `AWS::CloudWatch::Alarm.Metric`, `AWS::CloudWatch::Alarm.MetricDataQuery` and `AWS::CloudWatch::Alarm.MetricStat` in all supported regions
- Add `AWS::Lambda::LayerVersion`, `AWS::Lambda::LayerVersion.Content`, and `AWS::Lambda::LayerVersionPermission` in all supported regions
Fixes
- Fix description on rule [W2501](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#W2501) to be more informative
- Update rule [E2532](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E2532) to allow `Parameters` in a `Task` in a Step Function
- Fix rule [E1010](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E1010) to allow Refs in the GetAtt attribute section
- Add `AWS::CloudFormation::Init` as an exception for rule E1029
- Add `Informational` error messages to JSON outputs
- Fix file searching `**/*` to recursively search in Python 3.5 and greater
- Update CopyRight from 2018 to 2019