Merge pull request #44 from aaccomazzi/master

Added real-world test for STI and Crossref metadata
Utility script to directly publish a list of bibcodes to SolrUpdateQueue
Merge branch 'master' of https://github.com/adsabs/ADSimportpipeline
call serialize() instead of deprecated __str__() on xml objects; Raise exception after logging for mongowrite
Merge branch 'master' of https://github.com/adsabs/ADSimportpipeline
Hungarian Graph class implemented
Converted to numpy style, much slower though, by factor 10
Added both class types to the lib file. Currently setup to use the old version. NumPy version scales better for larger datasets.
Merged jonnybazookatone's changes; implementation of assignment algorithm now a choice
Merge branch 'jonnybazookatone-master'
Cleaner class definition for Assignment algorithm, numpy implementation
Deal with empty author lists