trying to keep clean up to upstream master
Merge remote-tracking branch 'upstream/master'
initial add of pubchem parsers
corrected msg for downloading bioactivity
Merge remote-tracking branch 'upstream/master'
code cleanup fixed bioactivity directory removal after processing
version snapshot of working pubchem

This is version 0.1 of pubchem parser that can be merged with the
bio2rdf master branch
Merge branch 'pubchem'
fixed foreach bug in substance record parsing
Merge branch 'pubchem'
added ref from substance to compounds
Merge remote-tracking branch 'upstream/master'
copied in hgnc folder cause it wasn't being pulled from upstream for some reason
fixed references from substances to compounds
Merge remote-tracking branch 'upstream/master'
select particular file, allow non-conforming symbols (sigh), remove slashes in literals
initial commit of clinical trials parser
removed processing of the mixed bag in annotation transcript cluster
added multiple file processing, and entity tabulation only on subjects not objects
refactor to only declare entity descriptions once, and everything else into an annotation object