Update version

Author: Pygmalion69

app/build.gradle

@@ -7,8 +7,8 @@ android {
         applicationId "org.nitri.opentopo"
         minSdkVersion 19
         targetSdkVersion 28
-        versionCode 20
-        versionName "1.9.1"
+        versionCode 21
+        versionName "1.10"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
     }