add .with_type to Data
Merge branch 'develop'
Release 1.3.1. Remove Babelfish. Refactor Data::Errors to Quandl::Error'
add babelfish as a dependency. Add Quandl::Babelfish::Data.
Release 1.3.2.
integrate Babelfish.clean as part of Quandl::Data.clean method.
    known_format?( data ) ? clean_with_format(data) : clean_with_babelfish(data)
Release 1.3.3. integrate Babelfish.clean as part of Quandl::Data.clean method
add precision
fabricated data is forced to precision of 14
Release 1.3.4. add #to_precision(Integer)
refactor format errors to be raised with line, context, row
add Data#to_table that returns self. Useful in conjunction with search scopes
add Validations, #valid? #errors
Release 1.3.5. add Validations, #valid? #errors. refactor format errors to be raised with line, context, row
validations
Add #guess_csv_delimiter to Data::Format. QUGC-5
Release 1.3.6. Add #guess_csv_delimiter to Data::Format.
revise Quandl::Data#frequency to use Quandl::Babelfish.guess_frequency
Release 1.3.7. revise Quandl::Data#frequency to use Quandl::Babelfish.guess_frequency
minor version