Fix ITEM_QUERY: filter regex only works with raw string. The ?corpus is
a rdflib.term.URIRef(u'http://ns.ausnc.org.au/corpora/mbep') which does
not work with SPARQL regex filter
Add a test for manifester ITEM_QUERY query
Add hcsvlab specific gitignore stuff
Add collection level metadata(i.e n3 file) as CLI option
Refactor XLSIngester naming
Move create output dir into XLSIngester because different ingester
might have different tree structure and this is specific for subclasses