Jiren Patel

Results 17 issues of Jiren Patel

- Added tag class to store tag metadata - Refactor stats and tags code and test cases to manage tag class.

[Encoding Doc](https://github.com/w3c/correlation-context/blob/master/correlation_context/HTTP_HEADER_FORMAT.md)

[Specs](https://github.com/census-instrumentation/opencensus-specs/blob/master/tags/TagMap.md#encoding) and [Encoding Doc](https://github.com/census-instrumentation/opencensus-specs/tree/master/encodings)