Code cleanup

-Replace tabs with double-spaces
-Betting spacing and lining up of code functions
-Add missing semi-colons
-Remove extra characters and spaces where applicable
-Remove commented-out code fragments
-Add missing 2021 date to LICENSE
-Small touchups and other misc nitpickings

bin/cluster

@@ -7,37 +7,38 @@ if (cluster.isMaster) {
       console.log('Error: unable to create cluster.pid');
       process.exit(1);
     } else {
-      console.log('Starting cluster with pid: ' + process.pid);    
-      //ensure workers exit cleanly 
+      console.log('Starting cluster with pid: ' + process.pid);
+
+      // ensure workers exit cleanly
       process.on('SIGINT', function() {
         console.log('Cluster shutting down..');
+
         for (var id in cluster.workers) {
           console.log('Worker shutting down (' + id + ')');
           cluster.workers[id].kill();
         }
+
         // exit the master process
         process.exit(0);
       });
 
-      // Count the machine's CPUs
+      // count the machine's CPUs
       var cpuCount = require('os').cpus().length;
 
-      // Create a worker for each CPU
-      for (var i = 0; i < cpuCount; i += 1) {
+      // create a worker for each CPU
+      for (var i = 0; i < cpuCount; i += 1)
         cluster.fork();
-      }
 
-      // Listen for dying workers
+      // listen for dying workers
       cluster.on('exit', function (worker, code, signal) {
-        if (worker['process']['exitCode'] === 0) {
+        if (worker['process']['exitCode'] === 0)
           console.log('Worker shut down.');
-        } else if ((signal != 'SIGINT') && (worker['process']['exitCode'] !== 0) && (worker.exitedAfterDisconnect !== true)) {
+        else if ((signal != 'SIGINT') && (worker['process']['exitCode'] !== 0) && (worker.exitedAfterDisconnect !== true)) {
           console.log('Cluster restarting...');
           cluster.fork();
         }
       });
     }
   });
-} else {
-  require('./instance');
-}
+} else
+  require('./instance');