Make open-tabular-file :csv ignore :ext options passed to dispatcher
Make open-all-datasets tests robust to file ordering
Fix to close database connections properly, whilst also allowing fine
grained control over connections.
Fix test so it doesn't require a fixture which can be brittle when run
at the REPL.
Add debug log output and clojure.tools.logging dependency.
Improved docstring and recommendations on controling
resource usage with query.
Switch *warn-on-reflection* off, way too noisy by default.
Merge branch 'master' of github.com:Swirrl/grafter

Removed type hints from tests, as they're unnecessary.

Conflicts:
	test/grafter/rdf/sesame_test.clj
Fix open-tabular-file etc... to parse CSV keyword arguments properly.
Merge pull request #8 from Swirrl/open-txt-file

Open txt file
Fix statements to be 4.5x faster at parsing RDF files with statements*.

* Tested on a file of ntriples.  Works by batching the queue between
  threads at a default of 32 elements at once.

Also made statements batch size configurable (when parsing RDF) with the
:buffer-size option.
Better comment on buffer-size option.
Removed junk code.
Propagate nil when converting string to RDF type.
Much faster code paths to add raw InputStreams/Readers to
ITripleWriteables.

These code paths allow users to go direct instead of using statements
when eagerly reading raw RDF.
Upgrade to latest sesame, v2.7.14.
Refactored type validations.
Merge branch 'master' into adding_more_unit_tests