tests for new sparql caching
lock update
Create LICENSE.txt
Add IDGenerationError and ignore in exists? method
Merge pull request #91 from ncbo/id_generation_error_exception

Add IDGenerationError and ignore in exists? method
NCBO-482 consistent typing for properties
support for name_with ID in id_generation_error_exception
NCBO-470 added LANG=C to speed up grep execution
NCBO-536 split model loading to avoid large SPARQL filters
NCBO-536 test suite with different loading sizes
Unique reference loading does not apply across slices

Avoid test_unique_object_references test when using small slices.
NCBO-473 handle dependency delete - avoid exception
Add pry to gemspec
remove tmp dir after import triples
NCBO-466 no_graph option

Queries that have no overlapping predicates across graphs are faster
lock update
remove prys in goo
break long parameter line
graphs should be registered in first query level options
lock file update - sparql client changes