v0.5.3: Ignore unset immutable fields in ECS

Allow ignoring ECS Immutable fields if they aren't supplied (#463)

* Allow ignoring ECS Immutable fields if they aren't supplied in the first place.

* Bump version

v0.5.2: Add NetworkConfiguration to the ECS Actor

Update version.py

v0.5.1

Add skip_cleanup: true (#461)

* Add skip_cleanup: true

* Bump Kingpin Version

v0.4.1

Version 0.4.1

• #435: Pass Kingpin ECS actor ENV vars to task definition ([@diranged])
• #434: SYSTEMS-957: Support NoEcho Parameters in CloudFormation stacks. ([@diranged])
• #433: ECS: Fix a race condition in stop service ([@swaggy])
• #432: New Actor: spottinst.ElastiGroup ([@diranged])
• #431: Compare S3 bucket tags with some intelligence. ([@diranged])
• #429: Quiet down a logging statement ([@diranged])
• #428: Strip out unicode characters in diff_dicts. ([@swaggy])
• #427: Bugfix on S3 Bucket Tag comparison. ([@mikhail])
• #426: Add CAPABILITY_NAMED_IAM to the enumeration of capabilities parameters. ([@sabw8217])
• #424: Missed adding the self._bucket_exists check to _get_policy(). ([@diranged])
• #423: Bugfixes around creation of new S3 buckets. ([@diranged])
• #422: Convert the aws.s3.Bucket actor to use Boto3 ([@diranged])
• #412: Bugfix -- handling a single alertspec on a template was broken ([@diranged])
• #411: Bugfix: Make sure we set self.changed=True after updating the runnabl… ([@diranged])
• #410: Fix the RightScale ServerTemplate/Alert integration tests.. ([@diranged])
• #409: Delete .base.py.swo ([@diranged])
• #407: Bugfix - threshold must be a string. ([@diranged])
• #402: Create a new AlertSpecBase ensurable base actor for managing RightScale AlertSpecs ([@diranged])
• #393: Bugfix -- we couldn't create S3 buckets in anything other than the default region. ([@diranged])
• #391: Bugfix -- if no cloudformation parameters, thats fine. ([@diranged])
• #389: Remove bogus testing log line that was left there accidentally. ([@diranged])
• #385: Add ecs service actor. ([@swaggy])
• #383: New Actor: rightscale.ServerTemplate ([@diranged])

Bring on the state-management actors!

Merge pull request #375 from Nextdoor/release_prep

Release Prep - 0.4.0