New NUMBER, DATE elementTypes and Performance Improvements

• Element Variance. This allows multiple ElementTypes to be added in same document.
• New NUMBER ElementType, this allows fuzzy match with numbers and score numbers according to how close they are to each other in value
• New DATE ElementType, similar to numbers dates that are closer in values are scored higher
• Performance improvement, changed element default scoring and cached Token list for each element

Performance Improvements

• Reduced complexity of matching to O(N Log N).
• Added performance tests showing performance with large sets of data

Removed Spring Dependency

Merge pull request #5 from intuit/reduce-complexity-to-NLogN

Reduce complexity to n log n