Bug-fixes and improvements:
* Closes#5
* Closes#1
* Adds Client (beta)
* Added several schemas
* Lighter string representation -> should avoid delays in the analysis
with plugins that have 'heavy' attributes
Backwards-incompatible changes:
* Context in headers by default
* All schemas include a "@type" argument that is used for autodetection
in the client
... And possibly many more, this is still <1.0
