Troposphere

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* Add MariaDB to list of RDS engines [GH*368]
* Add ap*northeast [GH*373]
* Add T2 Nano [GH*374]
* capability support for cfn [GH*375]
* Update to resource list in documentation [GH*383]
* More info from validator function errors [GH*385]
* Add testing for python 3.5 [GH*388]
* Extended title validation [GH*389]
* EC2 NAT Gateway [GH*394]
* Add AWS::ECR::Repository [GH*395]
* Add KmsKeyId and StorageEncrypted to DBCluster [GH*396]
* Add awacs soft dependency [GH*397]
* New dynamodb2 module to replace dynamodb for consistent interface [GH*398]
* Add IsMultiRegionTrail support [GH*399]
* Add IncludeGlobalResourceTypes to RecordingGroup [GH*400]
* Capitalize examples [GH*404]
* use location constants for bucket creation in cfn [GH*409]

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* Add RDS Aurora support [GH*335]
* Change DeploymentGroup Ec2TagFilters to list [GH*337]
* Correct EC2 SpotFleet LaunchSpecifications [GH*338]
* RDS::DBCluster change AvailabilityZone to AvailabilityZones [GH*341]
* ECS LoadBalancerName property is a string [GH*342]
* CodeDeploy S3Location Version property is not a default requirement [GH*345]
* Add AutoEnableIO to AWS::EC2::Volume
* Only discard Properties in JSONrepr [GH*354]
* CodeDeploy added ApplicationName [GH*357]
* CodeDeploy DeploymentGroupName property missing [GH*358]
* Add in cloudfront properties for max, default [GH*360]
* Allow RDS iops to be 0 [GH*361]
* Add CodePipline support [GH*362]
* Implemented CloudFormation changes from Dec 3 and Dec 28 [GH*366]
* Add AWS::Config, AWS::KMS, AWS::SSM

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* Add new resources from 2015*10*01 CloudFormation release:
* AWS::CodeDeploy
* AWS::DirectoryService::SimpleAD
* AWS::EC2::PlacementGroup and AWS::EC2::SpotFleet
* AWS::Lambda::EventSourceMapping and AWS::Lambda::Permission
* AWS::Logs::SubscriptionFilter
* AWS::RDS::DBCluster and AWS::RDS::DBClusterParameter
* AWS::WorkSpaces::Workspace
* Add updates to these resources from 2015*10*01 CloudFormation release:
* AWS::ElastiCache::ReplicationGroup
* AWS::OpsWorks::Stack
* AWS::OpsWorks::App
* AWS::S3::Bucket
* Add ElastiCache (Redis) Example [ GH*329]
* RDS: Added postgresql*license [GH*324]
* tail: only add unseen events [GH*327]
* Make Ref() work with datapipeline.ObjectField.RefValue [GH*328]
* Fix DeploymentGroup resource_type (AWS::CodeDeploy::DeploymentGroup) [GH*333]
* Add concatenation operator function __add__ for Tags [GH*334]

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* Give more info about type errors [GH*312]
* Move `tail` within the troposphere library. This lets external libraries
leverage this function [GH*315]
* Improve opsworks validation [GH*319]
* Fix RDS validation with conditional parameters [GH*320]

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* Bugfix for RDS Ref/GetAtt issue [GH*310]

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* Add support for EFS
* Elasticache: only validate az choices if azs is a list [GH*292]
* Add from_dict function to BaseAWSObject [GH*294]
* IAM: Path is optional for Role and InstanceProfile [GH*295]
* Validate parameter options based on Type [GH*296]
* RDS: Add more specific validators to DBInstance [GH*297]
* Add constants for the parameter types [GH*300]
* Add lambda ZipFile property [GH*301]
* Adds VPCEndpoint resource type [GH*304]
* Supports tags in ElasticBeanstalk environments [GH*308]
* Move cloudformation attribute setting to __setattr__ [GH*309]