FYI: `mach python-test` API change

If you never use `mach python-test`, you can stop reading now. At the latest version of mozilla-central, `mach python-test` no longer takes a `--python` command-line argument. If you're used to using it, you have alternatives: * If you're used to doing `./mach python-test --python 3 ...`, you

Intent to Ship - sandbox-"allow-downloads"

Intent to Ship - sandbox-"allow-downloads" Summary: Firefox 82 will start to block downloads that are initiated by sandboxed iframes unless the embedder has opted in via setting the “allow-download” sandbox-flag. Bug: Bugzilla 1558394