Android 0.18

versionCode 20, because 19 is already public and Android refuses to install
anything at or below a code it already has.

Carries polls nobody can attribute and handing a call to another of your own
devices, on top of the call fixes that went out in 0.17.

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 = 19
-        versionName = "0.17"
+        versionCode = 20
+        versionName = "0.18"
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }