Chalice

* bugfix:deployment:Fix issue where provided ``iam_role_arn`` was not respected on
redeployments of chalice applications and in the CloudFormation template
generated by ``chalice package`` (339)
* bugfix:config:Fix ``autogen_policy`` in config being ignored (367)
* feature:rest-api:Add support for view functions that share the same view url but
differ by HTTP method (81)
* enhancement:deployment:Improve deployment error messages for deployment packages that are
too large (246, 330, 380)
* feature:rest-api:Add support for built-in authorizers (356)

* feature:rest-api:Add support for ``IAM`` authorizer (334)
* feature:config:Add support for configuring ``lambda_timeout``, ``lambda_memory_size``,
and ``tags`` in your AWS Lambda function (347)
* bugfix:packaging:Fix vendor directory contents not being importable locally (350)
* feature:rest-api:Add support for binary payloads (348)

* bugfix:CLI:Fix issue where ``--api-gateway-stage`` was being
ignored (325)
* feature:CLI:Add ``chalice delete`` command (40)

* enhancement:deployment:Alway overwrite existing API Gateway Rest API on updates (305)
* enhancement:CORS:Added more granular support for CORS (311)
* bugfix:local:Fix duplicate content type header in local model (311)
* bugfix:rest-api:Fix content type validation when charset is provided (306)
* enhancement:rest-api:Add back custom authorizer support (322)

* feature:python:Add support for python3! (296)
* bugfix:packaging:Fix swagger generation when using ``api_key_required=True`` (279)
* bugfix:CI-CD:Fix ``generate-pipeline`` to install requirements file before packaging (295)

* feature:CLI:Add ``chalice package`` command. This will
create a SAM template and Lambda deployment package that
can be subsequently deployed by AWS CloudFormation. (258)
* feature:CLI:Add a ``--stage-name`` argument for creating chalice stages.
A chalice stage is a completely separate set of AWS resources.
As a result, most configuration values can also be specified
per chalice stage. (264, 270)
* feature:policy:Add support for ``iam_role_file``, which allows you to
specify the file location of an IAM policy to use for your app (272)
* feature:config:Add support for setting environment variables in your app (273)
* feature:CI-CD:Add a ``generate-pipeline`` command (277)