Pyathenajdbc

* Update JDBC driver to 2.0.5.
* Suppress log4j warnings.
* Fix the context manager to return a connection object instead of a cursor object.
* Remove query execution information.
Since the JDBC driver can not retrive query execution information, remove the following property from the cursor object. If you hack the JDBC driver, you may be able to retrive query execution information.
* QueryID
* OutputLocation
* DataScannedInBytes
* EngineExecutionTimeInMillis
* CompletionDateTime
* SubmissionDateTime

* Fix type code contract.
PEP 249 - Type Objects and Constructors
https://www.python.org/dev/peps/pep-0249/type-objects-and-constructors
Thanks memeplex. (laughingman7743/PyAthena/issues/32)

* Fix syntax error message hiding.
Thanks abridgett. (laughingman7743/PyAthenaJDBC54)

* Support session token with profile name.
Thanks djhworld. (laughingman7743/PyAthenaJDBC51)

* Add more types to SQLAlchemy type conversion.
* FLOAT
* REAL
* CHAR

* Support AWS credentials provider chain.
Thanks Tankanow. (laughingman7743/PyAthenaJDBC42)
* Drop support for PY26 & Add support for PY36.
* Add check of arraysize (fetch size).
The default arraysize (fetch size) is 1000.
The maximum allowable length is 1000.