Bump version to 1.8

Author: krlvm

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "ru.krlvm.powertunnel.android"
         minSdkVersion 16
         targetSdkVersion 29
-        versionCode 15
-        versionName "1.7.1"
+        versionCode 16
+        versionName "1.8"
         multiDexEnabled true
 
         externalNativeBuild {

fastlane/metadata/android/en-US/changelogs/16.txt

@@ -0,0 +1,11 @@
+New features:
+- You can start PowerTunnel using quick settings tile now. This feature requires Android 7 and higher.
+
+Improvements:
+- Added notification that can be used to stop PowerTunnel
+- Improved performance and memory usage
+- Improved user interface
+
+Bugfixes:
+- Fixed an issue with certificate installer
+- Fixed an issue when the PowerTunnel logo was showing in low resolution

new_version.txt

@@ -1 +1 @@
-15;1.7.1;16
+16;1.7.1;16