Initial support for nonparametric sources
Fixed management of incrementalMFD
Merge branch 'master' of github.com:gem/oq-commonlib into nonparametric
Fixed a merge error
Better management of 3D points
Full support for LiteralNodes
Split the RuptureParser from the SourceParser
Removed NrmlHazardlibConverter which is now obsolete
Renamed parser -> converter and added tests for invalid files
Made the validation error messages more robust and added tests
Added the file name to the error message for invalid NRML files
Small fixes and added a lot of docstrings
Used nrmllib.node.read_nodes
Decoupled again the converter from the parser and added various imprprovements and tests
Made split_coords_2d to return 2D coordinates
Fixed the concerns raised in https://github.com/gem/oq-commonlib/pull/34
Merge pull request #34 from gem/nonparametric

Added a generic SourceConverter class for all sources, including the NonParametric ones