Two other changes had already been queued up and were included in this release. The first was the addition of a monochrome icon that users can opt to use beginning in Android 13.
The minimum API was bumped to 24 (Android 7) because Google has cut off WebView updates for older versions of Android. This means that devices running Android 6 (the previous minimum API) will not be able to update to 3.13.4.
Now that Privacy Browser PC 0.1 has been release I intend to spend a little more time working on Privacy Browser Android. I expect this to be the last release of the 3.13 series, with the next version being 3.14.