Node class and related utilities, first version
Merged from streaming-xml-writer
Merge branch 'master' of github.com:gem/oq-nrmllib into cvs2exposure
Implemented the conversion library from flat files to NRML files and back
Some renaming and a small fix on the streaming writer
Added Readers and improved the error message of assert_valid
Merge branch 'master' into csv-tools
Saved the .json in indented form
Added the NRMLconvert tool, first version
Moved the readers in their own module
Added the forgotten file readers.py
Moved around the node conversion routines
Fixed a few (doc)tests of the Node library
Improved the support for zip archives
Added conversion of GMF files and fixed the ordering of the attributes in the writer
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