Added a Node class and some fixes to the StreamingXMLWriter
Some improvements to the docs
Removed the dependency from with_slots
Improved several docstrings
Fixed a merge conflict
Removed a leftover
Merge branch 'node-library' into csv-tools
Very minor changes
Given a name to an anonymous type
Merge branch 'node-library' into csv-tools
Started the work on the branch metadata-as-xml
Futher work on the JSON->XML refactoring
Changed the writer to strip whitespace
Fixed the convert tests
Fixed all the other tests
Fixed a small bug in discrete fragility models
Merge branch 'metadata-as-xml' into csv-tools
Small refactoring