added graph slice code + test
Merge branch 'master' into slice
added slice to resources
Immigrate rdflib-sparql (plus some prefiguring changes)
Immigrated, refactored rdfextras code.
Add some storage conveniences
Shepherding.
dependencies for 2.6/2.5
PyRdfa parser: updated the initial context with the new prefixes: rr, sd, prov, dc11
PyRdfa parser: updated the initial context with the new prefixes: rr, sd, prov, dc11 (trying the push again)
minor cleanup - some docstrings
reset flags after test for sparql tests
integrated xml/html literal code into normal literal class
merged master
removed code to support 2.4
Revert to mainstream, temporarily suspend doctests.
pep8
Integrate mainstream pull of rdflib-sparql
doc update, fixes #260.
replaced IOMemory store with new implementation based on Python sets