fixed examples
better support for the different node types
bugfix around subgraphs
small fix
fix for XDI/JSON/GOM
WIP to implement $set
WIP $set operation
tests passing
WIP to support $set
WIP to simplify core API
new syntax again :)
updated gson
WIP
iterator use, and incoming relations
minor cleanup work
optimization
updated parser, and subgraph validity checking
tests and xml
small fix