Added support for #cancel_stack_update to AWS::CloudFormation::Client.
Fixed typo in docs citing non-existent method..

Specifically, S3::Bucket#disable_versioning.
In reality, it's #suspend_versioning.
Merge pull request #189 from mvastola/mike/docfix

Fixed typo in docs citing non-existent S3::Bucket#disable_versioning method
(use #suspend_versioning instead).
CORSRuleCollection delete_if can delete all rules

If CORSRuleCollection#delete_if matched all the rules, you'd get:

  ArgumentError - expected one or more rules:
    (gem) aws-sdk-1.8.3.1/lib/aws/s3/cors_rule_collection.rb:101:in `set'

So if all the rules are deleted, call #clear instead.
Better fix for the delete_if bug

Actually, this works better since #set checks for [[]].
Merge pull request #190 from mferrier/patch-1

CORSRuleCollection delete_if can delete all rules
Updated the EC2 API configuration to the 2013-02-01 API version.
Bumped AWS::EC2::Client api version.
Bump version to 1.8.4
Removed and unecessary service call from DynamoDB features.
Added missing documentation for the :expires option to S3Object#write.
EC2::SnapshotCollection now populates snapshots when enumerating.
Changed String to Boolean with type of:dynamo_db_retry_throughput_errors
Merge pull request #194 from Mahito/fixdocs

Changed String to Boolean with type of :dynamo_db_retry_throughput_errors
Updated RDS client to the latest API version (2013-02-12).
Marked a fragile test as pending until it can be refactored.
Fixed an issue with DescribeVpcAttribute.
Bump version to 1.8.5
Added documentation for for AWS::CloudWatch::Client operations.
Added a rule to ignore enum traits.