M3u8

* [Remove quotes from video range](https://github.com/globocom/m3u8/commit/4eb9e50492f4e23076902494e8def6d6cb52cbf9)
* [Add support for EXT-X-CUE-OUT-CONT attributes in Segment.dumps](https://github.com/globocom/m3u8/commit/d2b9d46cb30e70827fe199f09897b46befea4e55)

* Follow RFC 8261 section 4.3.4.2 for CLOSED-CAPTIONS
* Add support for stable variant/rendition IDs
* Use millisecond accuracy for EXT-X-PROGRAM-DATE_TIME
* Dropy support for Python 3.5

BREAKING CHANGES!

* `segment_map` is no longer just a map. It is now a list with all `EXT-X_MAP`. Previous version of this tag was not useful because every segment has its own initialization section
* Remove quotes from `BYTERANGE` attribute

BREAKING CHANGES!

This is version 1.0.0 of m3u8 and it includes a breaking change if you were using custom parser functions.

* Extend custom_tags_parser functionality
* Remove coveralls

* Add ext-x-bitrate hls tag
* Fix hardcoded /tmp directory in test
* Add support for Content Steering tag
* Clear scte35 state on cue-in

- Add Github actions to test the code
- Treat S3 as a URL instead of a local file