Update gradle and remove unused compopnents

.gitignore

@@ -1,9 +1,9 @@
 *.iml
 .gradle
 /local.properties
-/.idea/workspace.xml
+.idea/
-/.idea/libraries
 .DS_Store
 /build
 /captures
 .externalNativeBuild
+app/release/

app/build.gradle

@@ -8,12 +8,11 @@ android {
 		targetSdkVersion 27
 		versionCode 1
 		versionName "1.0"
-		testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
 		vectorDrawables.useSupportLibrary true
 	}
 	buildTypes {
 		release {
-			minifyEnabled false
+			minifyEnabled true
 			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 		}
 	}
@@ -21,8 +20,7 @@ android {
 
 dependencies {
 	implementation fileTree(dir: 'libs', include: ['*.jar'])
-	implementation 'com.android.support:appcompat-v7:27.1.0'
+	implementation 'com.android.support:appcompat-v7:27.1.1'
-	implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+	implementation 'com.android.support.constraint:constraint-layout:1.1.1'
 	implementation 'com.android.volley:volley:1.1.0'
-	implementation 'com.android.support:support-v4:27.1.1'
 }

app/src/androidTest/java/me/xor_hydrogen/i3control/ExampleInstrumentedTest.java

@@ -1,26 +0,0 @@
-package me.xor_hydrogen.i3control;
-
-import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import static org.junit.Assert.*;
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
- */
-@RunWith(AndroidJUnit4.class)
-public class ExampleInstrumentedTest {
-	@Test
-	public void useAppContext() throws Exception {
-		// Context of the app under test.
-		Context appContext = InstrumentationRegistry.getTargetContext();
-
-		assertEquals("me.xor_hydrogen.i3control", appContext.getPackageName());
-	}
-}

app/src/main/AndroidManifest.xml

@@ -14,7 +14,6 @@
 		<activity android:name=".MainActivity">
 			<intent-filter>
 				<action android:name="android.intent.action.MAIN" />
-
 				<category android:name="android.intent.category.LAUNCHER" />
 			</intent-filter>
 		</activity>

app/src/test/java/me/xor_hydrogen/i3control/ExampleUnitTest.java

@@ -1,17 +0,0 @@
-package me.xor_hydrogen.i3control;
-
-import org.junit.Test;
-
-import static org.junit.Assert.*;
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
- */
-public class ExampleUnitTest {
-	@Test
-	public void addition_isCorrect() throws Exception {
-		assertEquals(4, 2 + 2);
-	}
-}

build.gradle

@@ -1,14 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    
+
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.0'
+        classpath 'com.android.tools.build:gradle:3.1.3'
-        
+
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files