eac3to build 3.53:

* Fixed dial norm removal for non-Atmos THD. Disallowed removal for Atmos THD.
* Fixed bugs in -edit for AC3.
* Allow processing of a single AC3 frame.
* Fixed mono LPCM in MKV.
* Implemented dial norm removal for DTS-MA audio.
* Fixed demuxing compressed PGS subtitles from MKV.
* Updated the changelog.txt file.

https://rationalqm.us/eac3to/eac3to_3.53.rar