Added singleton to base classe
Fixed null as value problem with location:geo:type key list
test module complete
Merge pull request #36 from jeffakolb/master

Updated Foursquare and Tumblr test suites
newsgator and WP tests, plus bug fixes in their modules. bug fix in KeyPath in acscsv
Merge pull request #37 from fionapigott/master

newsgaotr and wp test modules + bug fixes
Simple running tests and some timing comparisons
Running tests
Merge branch 'singleton'
Typos and minor updates; experimentation with profiling and numba performance inhancements
added label attr to acscsv._Field
merge commit for acscsv._Field label addition