Initial 12.0 refactor.

There are no guarantees this commit will compile.

build.gradle

@@ -1,24 +1,11 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
-
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-    gradle.projectsEvaluated {
-        tasks.withType(JavaCompile) {
-            options.compilerArgs << "-Xlint:deprecation"
-        }
-    }
-}
-
 buildscript {
     repositories {
         google()
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.3'
+        classpath 'com.android.tools.build:gradle:7.1.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -27,9 +14,4 @@ buildscript {
 
 task clean(type: Delete) {
     delete rootProject.buildDir
-}
-
-repositories {
-    google()
-    mavenCentral()
-}
+}