Upgrade Gradle to v4.6

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.4'
+        classpath 'com.android.tools.build:gradle:3.2.0'
         classpath 'com.novoda:bintray-release:0.8.0'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -26,9 +26,10 @@ task clean(type: Delete) {
 
 ext {
     minSdkVersion = 14
-    targetSdkVersion = 27
-    compileSdkVersion = 27
-    buildToolsVersion = "27.0.3"
+    targetSdkVersion = 28
+    compileSdkVersion = 28
+    buildToolsVersion = "28.0.3"
     versionCode = 23
     versionName = "0.9.5"
+    appcompat_v7 = "com.android.support:appcompat-v7:28.0.0"
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Tue Aug 07 17:07:22 CST 2018
+#Wed Sep 26 09:42:38 CST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip