1. Add caching behavior bugfix for CacheMixin since the return value of cache can be modified by callers we always do a copy.
1. Add caching behavior bugfix for CacheMixin since the return value of cache can be modified by callers we always do a copy.

2. Based on profiling behavior we update is_tamil_unicode_predicate

arcturusannamalai/open-tamil,arcturusannamalai/open-tamil,Ezhil-Language-Foundation/open-tamil,arcturusannamalai/open-tamil,Ezhil-Language-Foundation/open-tamil,Ezhil-Language-Foundation/open-tamil,Ezhil-Language-Foundation/open-tamil,arcturusannamalai/open-tamil,Ezhil-Language-Foundation/open-tamil,Ezhil-Language-Foundation/open-tamil,arcturusannamalai/open-tamil,Ezhil-Language-Foundation/open-tamil,arcturusannamalai/open-tamil,Ezhil-Language-Foundation/open-tamil,arcturusannamalai/open-tamil,Ezhil-Language-Foundation/open-tamil