Added support for session-level conf overlay
Fixed bug with iteration; Fixes #8
Convert timestamps values into python datetimes

With this change timestamps are converted into datetime.datetime values
instead of being passed through as strings. Datetime conversion seems to
be the standard thing to do for a DB API 2 library.
Factored timestamp parsing into fn

Also fixed 2-space tabs into 4-space tabs
Don't try to apply query parameters if none were given

Previously a query like 'SELECT 1 % 2' would result in an error saying
'incomplete format'. This fixes queries that use percent sign but have
no parameters but there's still additional work to be done, see Issue 11.
Merge pull request #12 from caseyching/master

Don't try to apply query parameters if none were given
Updated URL in README; fixes #2
Made impyla fully DB API 2 compliant and added tests
Fixed version to 0.8.0-dev; regressed from 1.2

I erroneously set the version number to 1.2 a long time ago to match the Impala release, but that was stupid.  Luckily, I didn't register the 1.2 version with PyPI, so should be good-to-go.
Generated release commit for 0.8

Updated README
Switched to setuptools
Added ez_setup.py to MANIFEST to fix build
Specified setuptools >=2
Updated .gitignore and bumped dev version number
Added py version type to setup.py and made 4 space indent
Initial file for UDF work
Added a test 'harness' for working with the LLVM
Added ship_udf() function
UDF testing scratch work
Added script to register clang-compiled UDFs
Fixes to register-impala-udfs.py