ZhensongQian

Results 3 issues of ZhensongQian

@hsuantien In the aaai15 paper "Active Learning by Learning", extensive experiments illustrated the advantages of accuracy. It would be great to see the comparison regarding the **running time**.

- for ratio/partial_ratio, it is case **sensitive** - but for token_sort_ratio/token_set_ratio is case **insensitive** would be better to make them consistent? ``` >>> fuzz.ratio("this is a test", "this is a...

remove the force of "lowercase",add tests for case sensitive