Chalice

* feature:config:Add support for stage independent lambda configuration (1162)
* feature:event-source:Add support for subscribing to CloudWatch Events (1126)
* feature:event-source:Add a ``description`` argument to CloudWatch schedule events (1155)
* bugfix:rest-api:Fix deployment of API Gateway resource policies (1220)

* feature:websocket:Add experimental support for websockets (1017)
* feature:rest-api:API Gateway Endpoint Type Configuration (1160)
* feature:rest-api:API Gateway Resource Policy Configuration (1160)
* feature:packaging:Add --merge-template option to package command (1195)
* feature:packaging:Add support for packaging via terraform (1129)

* enhancement:rest-api:Make MultiDict mutable (1158)

* enhancement:dependencies:Update PIP to support up to 19.1.x (1104)
* bugfix:rest-api:Fix handling of more complex Accept headers for binary
content types (1078)
* enhancement:rest-api:Raise TypeError when trying to serialize an unserializable
type (1100)
* enhancement:policy:Update ``policies.json`` file (1110)
* feature:rest-api:Support repeating values in the query string (1131)
* feature:packaging:Add layer support to chalice package (1130)
* bugfix:rest-api:Fix bug with route ``name`` kwarg raising a ``TypeError`` (1112)
* enhancement:logging:Change exceptions to always be logged at the ERROR level (969)
* bugfix:CLI:Fix bug handling exceptions during ``chalice invoke`` on
Python 3.7 (1139)
* bugfix:rest-api:Add support for API Gateway compression (672)
* enhancement:packaging:Add support for both relative and absolute paths for
``--package-dir`` (940)

* bugfix:packaging:Fall back to pure python version of yaml parser
when unable to compile C bindings for PyYAML (1074)
* feature:packaging:Add support for Lambda layers. (1001)

* bugfix:packaging:Fix packaging multiple local directories as dependencies (1047)
* feature:event-source:Add support for passing SNS ARNs to ``on_sns_message`` (1048)
* feature:blueprint:Add support for Blueprints (1023)
* feature:config:Add support for opting-in to experimental features (1053)
* feature:event-source:Provide Lambda context in event object (856)