Remove deprecated Gradle features

gradle/root/jacoco.gradle

@@ -104,11 +104,9 @@ task jacocoReport(type: JacocoReport, group: 'Coverage reports') {
   
    reports {
       html {
-         enabled true
+         required
          destination new File(rootDir.absolutePath + "/jacocoReport")
       }
-      xml {
-         enabled false
-      }
+      xml { }
    }
 }

gradle/root/svg.gradle

@@ -62,7 +62,7 @@ task rasterizeSvg(type: JavaExec) {
 			files.push(file.toString())
 		}
 						
-		main = MAIN_CLASS
+		mainClass = MAIN_CLASS
 			
 		// Set up the entire arg list, minus the input files.
 		def argsList = ["-scriptSecurityOff",