Sourced from moto's changelog.

2.2.0

General Changes:
    * Support for Python 2.7 has been removed.
      The last release with Python2 support is now 2.1.0
New Methods:
* API Gateway:
* delete_domain_name()
* delete_method()
* update_domain_name()
* update_method()
* update_method_response()
* CognitoIdentity:
* update_identity_pool()
* EC2:
* create_transit_gateway()
* create_transit_gateway_route()
* create_transit_gateway_route_table()
* create_transit_gateway_vpc_attachment()
* create_transit_gateway_vpn_attachment()
* delete_transit_gateway()
* delete_transit_gateway_route()
* delete_transit_gateway_route_table()
* describe_transit_gateway_attachments()
* describe_transit_gateway_vpc_attachments()
* get_all_transit_gateways()
* get_all_transit_gateway_route_tables()
* modify_transit_gateway()
* search_transit_gateway_routes()
* Events:
* delete_api_destination()
* delete_connection()
* describe_connection()
* update_api_destination()
* Logs:
* put_resource_policy()
* Organizations:
* delete_organization()
* S3:
* delete_bucket_website()
Miscellaneous:
* API Gateway - add_integration() now supports the parameters integration_method, tls_config, cache_namespace
* API Gateway - add_method() now supports the parameters request_models, operation_name, authorizer_id, authorization_scopes, request_validator_id
* API Gateway - create_integration() now supports the parameters tls_config, cache_namespace
* API Gateway - create_method() now supports the parameters request_models, operation_name, authorizer_id, authorization_scopes, request_validator_id
* API Gateway - create_method_response() now supports the parameters response_models, response_parameters
* API Gateway - create_response() now supports the parameters response_models, response_parameters
* API Gateway - create_rest_api() now supports the parameters minimum_compression_size

... (truncated)

• 05915cf Prep 2.2.0 (#4085)
• f4f8527 Merge LocalStack changes into upstream moto (#4082)
• 7693d77 Remove Py2 support (#3915)
• 658f850 Update init.py
• 0aa588f Pin pip (#4083)
• e0d3b91 Terraform CI integration (#4081)
• d01bd59 Increase version number post-release
• 4066e84 Prep release 2.1.0 (#4074)
• 85dc52b Support all ELBv2 ListenerRule condition types (#4066)
• 54b98d4 Remove cfn-lint as a dependency for ssm extra (#4072)
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