Sop: Sync version with gradle version variable and fix format

build.gradle

@@ -171,6 +171,25 @@ subprojects {
         required { signingRequired }
         sign publishing.publications.mavenJava
     }
+
+    def generatedVersionDir = "${buildDir}/generated-version"
+
+    sourceSets {
+        main {
+            output.dir(generatedVersionDir, builtBy: 'generateVersionProperties')
+        }
+    }
+
+    task generateVersionProperties {
+        doLast {
+            def propertiesFile = file "$generatedVersionDir/version.properties"
+            propertiesFile.parentFile.mkdirs()
+            def properties = new Properties()
+            properties.setProperty("version", rootProject.version.toString())
+            propertiesFile.withWriter { properties.store(it, null) }
+        }
+    }
+    processResources.dependsOn generateVersionProperties
 }
 
 def getAndroidRuntimeJar(androidSdkApiLevel) {

pgpainless-sop/src/main/java/org/pgpainless/sop/commands/Version.java

@@ -15,15 +15,27 @@
  */
 package org.pgpainless.sop.commands;
 
-import picocli.CommandLine;
-
 import static org.pgpainless.sop.Print.print_ln;
 
+import java.io.IOException;
+import java.util.Properties;
+
+import picocli.CommandLine;
+
 @CommandLine.Command(name = "version", description = "Display version information about the tool")
 public class Version implements Runnable {
 
     @Override
     public void run() {
-        print_ln("PGPainless CLI version 0.0.1");
+        // See https://stackoverflow.com/a/50119235
+        String version;
+        try {
+            Properties properties = new Properties();
+            properties.load(getClass().getResourceAsStream("/version.properties"));
+            version = properties.getProperty("version");
+        } catch (IOException e) {
+            version = "DEVELOPMENT";
+        }
+        print_ln("PGPainlessCLI " + version);
     }
 }