I've been tracking many of these issues on the WebKit bug tracker: https://bug.webkit.org
For example: https://bug.webkit.org/show_bug.cgi?id=80559 (Bug 80559 - [ES6] Add support for ES6 Harmony).
The release notes linked to also links to the public commit that implemented each noted fix/update/new feature.
It's just that they don't engage much and it doesn't feel prioritized.
Take this website for example: http://opensource.apple.com/
The design feels like it's from the early 2000. There is almost no documentation besides the raw data/files.
It's just that they don't engage much and it doesn't feel prioritized.
Take this website for example: http://opensource.apple.com/
The design feels like it's from the early 2000. There is almost no documentation besides the raw data/files.