v0.38.0

Bug Fixes

• cli: exclusively is also '-e' for destroy (#3216) (d6f5207), closes #2367
• cloudwatch: AlarmWidget takes IAlarm (#3219) (9948bfd), closes #3068
• core: fix build errors in fsharp init-template (#3229) (7d020f1)
• core: UpdateReplacePolicy mirrors DeletionPolicy (#3217) (d61bd2c), closes #2901
• ecr: repository grant uses correct resource ARN (#3220) (cc2275c), closes #2473
• iam: fix managed policies for User (#3221) (ec1c5b7), closes #2557
• make capitalization of Ip/Az consistent (#3202) (d60d673)

Features

• use classes for structs in Python (#3232) (161a459)
• codebuild: allow specifying principals and credentials for pulling build images. (#3049) (3319fe5), closes #2175

BREAKING CHANGES

• codebuild: LinuxBuildImage.fromDockerHub() has been renamed to fromDockerRegistry() and WindowsBuildImage.fromDockerHub() has been renamed to fromDockerRegistry()
• iam: aws-iam.User and Group: managedPolicyArns =>
  managedPolicies.
• in all identifiers, renamed IPv4 => Ipv4, IPv6 =>
  Ipv6, AZs => Azs.