update api level to android 8

AndroidManifest.xml

@@ -26,7 +26,7 @@ THE SOFTWARE.
 	android:versionName="1.0.54"
 	android:versionCode="10540"
 	android:installLocation="auto">
-	<uses-sdk android:minSdkVersion="15" android:targetSdkVersion="25" />
+	<uses-sdk android:minSdkVersion="15" android:targetSdkVersion="26" />
 	<uses-permission android:name="android.permission.WAKE_LOCK" />
 	<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
 	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

build.gradle

@@ -22,13 +22,13 @@ android {
         disable 'ExtraTranslation'
     }
 
-    compileSdkVersion 25
-    buildToolsVersion "25.0.3"
+    compileSdkVersion 26
+    buildToolsVersion "26.0.1"
 
     defaultConfig {
         applicationId "ch.blinkenlights.android.vanilla"
         minSdkVersion 15
-        targetSdkVersion 25
+        targetSdkVersion 26
     }
 
     sourceSets {

project.properties

@@ -10,7 +10,7 @@
 # Indicates whether an apk should be generated for each density.
 split.density=false
 # Project target.
-target=android-25
+target=android-26
 
 ## do not enable: breaks settings in SDK15
 ##proguard.config=proguard.config