Troposphere

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* type is not required for EnvironmentVariable (975)
* Properly handle list objects used with DependsOn (Fixes 982)
* Explicitly convert allocated_storage to integer before using it in comparisons (983)
* Allow CreationPolicy override of props on WaitCondition (988)
* "JobDefinitionName" property in JobDefinition class is not required (995)
* ApiGateway::DomainName CertificateArn fix (996)
* Tags support for SSM documents 999 (1000)
* Add SSESpecification to DynamoDB::Table (981)
* Add GitCloneDepth and InsecureSsl to CodeBuild Source
* Add Trippers property to CodeBuild::Project
* Add aurora*mysql to list of valid RDS engines
* Batch ContainerProperties is required
* Add Regions to Route53 HealthCheckConfiguration
* Add ClusterIdentifier to Redshift::Cluster
* Add DBClusterIdentifier to RDS::DBCluster
* Add TagSpecification to EC2::SpotFleet LaunchSpecifcations
* Add DisableScaleIn to ApplicationAutoScaling
* Add ApiKeySourceType and MinimumCompressionSize to ApiGateway::RestApi
* Add AutoScalingGroupName to AutoScaling::AutoScalingGroup
* Add AWS::ApiGateway::VpcLink
* Add AWS::GuardDuty::Master and AWS::GuardDuty::Member
* Add AWS::SES
* Add GetCidr function for Fn::GetCidr

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* Add AWS::Inspector
* Add AWS::ServiceDiscovery
* Add InputProcessingConfiguration to KinesisAnalytics::Application
* EndpointConfiguration in ApiGateway::DomainName is not required
* Allow setting Subnets and SubnetMappings properties on ELBv2 LoadBalancers (934)
* increase lambda memory limit to support up to 3008 MB (936)
* Stop validation if CodeBuild Source Type is a Ref (940)
* Added support for AutoPublishAlias to AWS::Serverless::Function as specified https://github.com/awslabs/serverless*application*model/blob/master/versions/2016*10*31.md (#941)
* Add resource_type value and unit tests for guardduty AWSObject's (945)
* Added elasticsearch instance types for m4, c4 and r4 generations (948)
* Correct type in API Gateway GatewayResponse type (950)
* Fixes the lifecyclepolicy problem reported at Issue 953 (954)
* Add constants for EC2 M5 instance types (955)
* Adding support for Block Device Mapping V2 (960)
* Add support for Policy Document in SAM template. (961)
* Stab at documenting Troposphere basics (963)
* Adding HealthCheckGracePeriodSeconds into ECS Service (966)
* Add AllowedPattern to Parameter (968)
* Add long form parameter to to_yaml (972)
* Use S3.Filter for the serverless S3Event Filter property
* Remove erroneous print in tests/test_serverless.py
* Add FunctionForPackaging class to serverless
* Add AssociationName to AWS::SSM::Association
* Update S3::Bucket with 20180123 property changes
* Add DBSubnetGroupName to AWS::RDS::DBSubnetGroup
* Add ReservedConcurrentExecutions to AWS:Lambda:Function
* Add StreamEncryption to AWS::Kinesis::Stream
* Add LambdaOutput to KinesisAnalytics ApplicationOutput property
* Update required fields in IoT TopicRule DynamoDBAction
* Add validator for InstanceTenancy in EC2::VPC
* Add CreditSpecification and ElasticGpuSpecifications to EC2::Instance

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* In SpotFleet::SpotFleetRequestConfigData SpotPrice is optional
* Add RoutingConfig to AWS::Lambda::Alias
* Update AWS::CodeDeploy
* Add CodeDeployLambdaAliasUpdate to UpdatePolicy
* Add AWS::GuardDuty
* Add AWS::Cloud9
* Add initial python resource spec generator
* Update AWS::CodeBuild::Project to 20171201 changes
* Change AWS::Batch::ComputeResources.Tags type to dict (867)
* Update README for YAML template (925)
* Typo fix in examples/ElastiCacheRedis.py (926)
* Adds Fargate support to ECS types (929)
* Fix SSM NotificationConfig validator type (930)
* Fix SQS::Queue validation in the case of no QueueName specified (931)

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* Add support for VPCOptions in ElasticSearch (862)
* Add Description property for security group ingress and egress (910)
* Add QueryLoggingConfig to Route53::HostedZone
* Add SourceRegion to RDS::DBInstance
* Add RootVolumeSize and caleDownBehavior to EMR::Cluster
* Add new properties to ElastiCache::ReplicationGroup
* Add LinuxParameters to ECS::TaskDefinition ContainerDefinitions
* Add LifecyclePolicy to ECR::Repository
* Add ScheduledActions to ApplicationAutoScaling::ScalableTarget
* Add new properties into ApiGateway

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* Output yaml (to_yaml) using cfn_flip (Fixes 567)
* Allow AWSHelperFn for CodeCommit Trigger Event(s) (869)
* Adding the AWS::Glue resources (872)
* Use a list for Serverless::Function Tags (873)
* Support ProcessingConfiguration for Elasticsearch and Redshift (876)
* Fixes incorrect class definition. (877)
* Add TargetGroupInfo to DeploymentGroup 884 (895)
* Reverting 810 as AWS has changed the casing again (896)
* Add EMR Cluster MasterInstanceFleet and CoreInstanceFleet properties (897)
* Add EMR Cluster CustomAmiId (888) (898)
* Add SecurityGroupRule Description property (885) (899)
* Add support for tags in AWS::KMS::Key. (900)
* Adding OriginReadTimeout aka OriginResponseTimeout to cloudfront origin settings (901)
* Added property for OriginKeepaliveTimeout
* Add CloudFrontOriginAccessIdentity type (903)
* Added support for VpnTunnelOptionsSpecifications (904)
* Allow ref on Parameter (905)
* Adds Tags to Cloudfront Distribution (906)
* CloudFront: add IPV6Enabled property for DistributionConfig (908)
* Add OptionVersion to RDS:OptionConfigurations
* Add Tags to OpsWorks Layer and Stack
* Add LifecycleHookSpecification in AutoScalingGroup
* Add AmazonSideAsn to EC2::VPNGateway
* Add StateMachineName to StepFunctions::StateMachine
* Change KMS::Key to accept a standard Tags
* Add LambdaFunctionAssociations to CloudFront CacheBehaviors
* Add ResourceName to elasticbeanstalk OptionSettings
* Add AnalyticsConfigurations and InventoryConfigurations to S3::Bucket
* Add RequestValidatorId and OperationName to ApiGateway::Method
* Add deprecation warning for StageName in ApiGateway StageDescription
* Add AWS::CloudFront::StreamingDistribution

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* Set EC2 BlockDeviceMapping NoDevice property to type dict (866)