Release 0.7

This release includes upgrades and a few bug fixes

• Upgraded Spark support to version 2.6.0 - this is not backward-compatible with Spark 2.5.x, between the two releases there were breaking changes in the embedded server interfaces
• Fixed issue with URL encoding of path and query string parameters - The library now tries to decode the path and query string values passed by API Gateway.
• Added new uriEncoding property to the ContainerConfig object - By default the value for this property is set to UTF-8. The framework uses the configured charset to url decode request properties. All LambdaContainerHandler implementations exposed a method to access the config and change its values.
• The library can now group multiple Set-Cookie headers in a single header as a comma-separated list - This is because API Gateway only supports a single header per key. This behavior can be configured in the ContainerConfig object. RFC2109 specifies this behavior although it is still not supported by all browsers.
• Fixed a bug that caused servlet filters to be executed only for the first request.
• Fixed a bug that caused the Expires and MaxAge properties to be incorrectly populated in Set-Cookie headers.