Merge branch 'base-class'
Merge branch 'anaphora'
Merge branch 'tiger'
removed ipynb notebooks from master
added RST importer (from pcc repo)
rst: pickle instead of graphml output (can't handle sets)
rst.py: now based on layer-aware DiscourseDocumentGraph
renamed discoursegraphs.py to dg.py (try to avoid import confusion)
imported tiger, anaphoricity and rst doc graphs into io namespace
minor: whitespace
added functions to retrieve tokenlist from rst and tiger graphs
added rudimentary merging script (tiger+rst)
renamed io submodule to readwrite
merging: outsourced rst-tiger merging to function
merging: added skeleton for anaphoricity-tiger merging
merging: WORKS now (tiger + rst + anaphoricity)
merging: improved error message
merging now produces dot output, ignores anaphoricity edges/root
added requirements to readme
added simple makefile (gitstats, pip install/uninstall, merging.py testrun)