v0.19.0

Bug Fixes

• aws-cdk: add '-h' flag to bring up help (#1274) (47dafb0), closes #1259
• aws-cloudfront: Allow to disable IPv6 on cloudfront distribution (#1244) (10b7092), closes #1243
• aws-cloudtrail: correct S3 bucket policy and dependency chain (#1268) (0de2da8), closes #1172
• aws-ec2: fix code generation of IcmpPing (#1235) (6a13a18), closes #1231
• cdk: don't use instanceof in App (#1249) (a45c3bd), closes #1245
• cdk init: rename 'dotnet' to 'csharp' (#1210) (da6a799), closes #1123
• cdk init: update 'app' init template (#1209) (0287109), closes #1124 #1128 #1214

Features

• aws-codebuild: allow using docker image assets as build images (#1233) (72413c1), closes #1232 #1219
• aws-codebuild: rename the Project methods for adding Actions to CodePipeline. (#1254) (825e448), closes #1211
• aws-ecr: add an ECR Repository source CodePipeline Action. (#1255) (01cc8a2)
• app-delivery: IAM policy for deploy stack (#1165) (edc9a21), closes #1165 #1151
• Update to CloudFormation spec v2.16.0 (#1280) (9df5c54)

BREAKING CHANGES

• aws-codebuild: ecr.RepositoryRef has been replaced by ecr.IRepository, which
  means that RepositoryRef.import is now Repository.import. Futhermore, the CDK
  Toolkit must also be upgraded since the docker asset protocol was modified.
  IRepository.grantUseImage was renamed to IRepository.grantPull.
• aws-codebuild: addBuildToPipeline was renamed to addToPipeline
  and addTestToPipeline was renamed to addPipelineToTest in order to align
  with naming conventions.
• CloudFormationCapabilities.IAM renamed to
  CloudFormation.AnonymousIAM and PipelineCloudFormationDeployActionProps.capabilities?: CloudFormationCapabilities[] has been changed to
  PipelineCloudFormationDeployActionProps.capabilities?: CloudFormationCapabilities no longer an array.
  PipelineCloudFormationDeployActionProps.fullPermissions?: has been
  renamed to PipelineCloudFormationDeployActionProps.adminPermissions:
  and is required instead of optional.