What's Changed
- Add support for 29.97 DF timecode by @palemieux in #458
- Add SCC (CTA 608) writer by @palemieux in #441
- Disallow 'c' units for all style properties with the exception of ebutts:linePadding by @palemieux in #382
- Add content profile signaling to the model by @palemieux in #461
Full Changelog: 1.1.2...1.2.0-rc.1
Deployed at https://pypi.org/project/ttconv/1.2.0rc1/