Merge pull request #10 from cjheath/large_fuzzy_count

Fixed problem with large FUZZY counts, use named captures
Merge pull request #12 from cjheath/boolean_precedence

Implement standard precedence for boolean operators, not just left-to-ri...
Revised boolean_lexing patch for current master
Merge pull request #13 from cjheath/ilya_boolean_lexing

Revised boolean_lexing patch for current master
OR may now be chained
Merged back commits from ilya's tree