Troposphere

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* Convert fake AWSHelperFns into AWSProperties (478)
* cfn script: allow update (484)
* Validate the template against AWS before stack creation (485)
* Fix capitalization in README (487)
* Remove duplicate waf FieldToMatch class (fixes 489)
* Tune validation logic and test cases for S3 bucket names (486)
* waf XssMatchTuple should be an AWSProperty (Fixes 498)
* Allow setting a different region for S3 upload (491)
* fix attribute for ApiKey (Enable -> Enabled) (492)
* Invoke join correctly (493)
* EMR: fix EBS configuration (497)
* EMR: Action on Failure Fix (CONTINUE_AND_WAIT*>CANCEL_AND_WAIT) (501)
* Rewritten the helper to be more flexible (502)
* Added support for Kinesis Firehose (505)
* Add support for VPC Flow Logs (507)
* Syntax highlighting for readme python sample (508)
* Added Name property to Kinesis streams (510)
* Availability zones and EC2 instance type (512)
* Add `AutoScalingReplacingUpdate` to `UpdatePolicy` (513)
* Removed validation for DBSubnetGroupName when creating a read replica with SourceDBInstanceIdentifier (515)
* EMR configurations values: also allow AWS helper functions (516)
* Fix AssociationParameters Value type to list of strings (518)
* Add DependsOn to Deployment and remove Enabled from StageKey (519)
* Update fields in apigateway StageDescription (521)
* Fix rename pep8*>pycodestyle and bump to fixed pyflakes (522)
* Allows MultiAZ=false with AvailabilityZone in rds (524)
* Do not require Status as a param in iam.AccessKey (525)
* Fix badges in README

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* Remove unnecessary AWSHelperFn from props
* ReplicationConfigurationRules Destination is now an object (380)
* Add WAF SizeConstraintSet and XssMatchSet
* Logs SubscriptionFilter (413)
* Elasticsearch support (415)
* Fixed ConfigSnapshotDeliveryProperties type (420)
* Adding support for EMR resources (421)
* Fix `ecs.TaskDefinition.Volumes` that was incorrectly flagged as required (422)
* AWS::ECR test example (423)
* Add cloudfront hostedzoneid for route53 (427)
* Typo in variable name (431)
* ScalingAdjustment is an integer (432)
* Add Compress to CloudFront (433)
* Added missing S3OriginConfig parameter(437)
* Allow both GetAtt and a basestring (440)
* Add VpcConfig to AWS::Lambda::Function (442)
* Add Version Resource to awslambda (443)
* Add Alias Resource to awslambda (444)
* Ignore If expression during validation of ASG (446)
* Add test and tweak fix for ASG MaxSize If fix (446)
* Provide Valid Lambda Function Memory Values for use in Parameters (449)
* Add FunctionName to Lambda::Function (452)
* Add support for EBS volume configuration in EMR resources (453)
* Add elasticsearch instance type constants (454)
* DomainName isn't a required parameter (457)
* Create Documentation To Help Contributors (458)
* Move Groups to property, add policy template version (460)
* Fix Elasticsarch Domain object naming and add backward compatibility (461)
* EC2 update FromPort, ToPort and Egress as optional (463)
* ApiGateway Resources (466)
* Added CloudWatch Events support (467)
* Import JSON Templates (468)
* Fix config Source object to take a list of SourceDetails (469)
* Update Contribute Document to Use Requirements.txt (470)
* Update to Apr 25, 2016 release (471)
* Implement LifecycleRule Transitions property (472)
* Better AWSHelperFn support in template generator (473)
* Fix Bucket AccessControl to allow Ref (475)
* Fix baseclass for AWS::Logs::Destination (481)
* Add test for AWS::Logs::Destination (482)

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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]