added with confidence clause to whereclause grammar
can extract confidence and set to float or None
added grammar file
parses whereclause where col=val is the same as where col='val', spaces in val is still require quotest
forgot to delete a comment
Merge branch 'master' of https://github.com/mit-probabilistic-computing-project/BayesDB into pyparsing
made the quote agnostic feature simpler changing the grammar to ignore the quotes.
Merge branch 'pyparsing' of https://github.com/mit-probabilistic-computing-project/BayesDB into pyparsing
grammar updates
Merge branch 'pyparsing' of https://github.com/mit-probabilistic-computing-project/BayesDB into pyparsing