Additional features to support HouseSprinkler and HousePortal
This release contains the following improvements:
- Support for IPv6 (IPv4 is still supported).
- A simple API for the application to overwrite the echttp default options. This is mostly used to force the dynamic port mechanism as the default in applications designed to work with HousePortal.
- support a global protect callback. This was created to support CORS (see below)
- API extension to handle CORS mechanism: allow restricted cross-origin requests.