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* feature:EC2: Add `NetworkAclExists` waiter (`1019 <https://github.com/boto/botocore/issues/1019>`__)
* feature:Paginator: Add paginators for Application Auto Scaling service (`1029 <https://github.com/boto/botocore/issues/1029>`__)
* feature:Config: Add `max_pool_connections` to client config (`773 <https://github.com/boto/botocore/issues/773>`__, `#766 <https://github.com/boto/botocore/issues/766>`__, `#1026 <https://github.com/boto/botocore/issues/1026>`__)
* feature:``ec2``: Update ec2 client to latest version
* feature:``servicecatalog``: Update servicecatalog client to latest version