Version 0.17

What this carries, all of it merged since 0.16: a call answered on one
of your devices stops the others ringing, reactions meant for one person
inside a group, reactions during a call, and conversations held off the
record by both phones.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app/build.gradle.kts

@@ -40,8 +40,8 @@ android {
         // the paragraph above, so the code keeps climbing and the NAME is what
         // closes the 0.10 -> 0.12 gap. They are allowed to differ: the code is
         // ordering, the name is what a person reads.
-        versionCode = 18
-        versionName = "0.16"
+        versionCode = 19
+        versionName = "0.17"
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }