Add Change Number capability and Conversation Update item.

app/src/test/java/org/thoughtcrime/securesms/migrations/ApplicationMigrationsTest.kt

@@ -0,0 +1,19 @@
+package org.thoughtcrime.securesms.migrations
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import java.lang.reflect.Field
+import java.lang.reflect.Modifier
+
+class ApplicationMigrationsTest {
+  @Test
+  fun `ensure ApplicationMigration CURRENT_VERSION matches max version`() {
+    val fields: Array<Field> = ApplicationMigrations.Version::class.java.declaredFields
+
+    val maxField: Int? = fields.filter { Modifier.isStatic(it.modifiers) && it.type == Int::class.java }
+      .map { it.getInt(null) }
+      .maxOrNull()
+
+    assertEquals(ApplicationMigrations.CURRENT_VERSION, maxField)
+  }
+}