Add new HTTP Header to the response

Added a new HTTP header Access-Control-Expose-Headers in the repsonse.

Full Changelog: 1.0.3...1.0.4

1.0.3

Release notes:

• Fixed a bug related to header merging. The issue occurred when a header was set both in the connector and in the origin.

1.0.2

Release notes:

• The URL that the worker receives can now be rewritten using the workerHost dictionary item.
  This will rewrite the host part of the URL.
  With this you can chain VCL and the worker.

1.0.0

First release of the connector