Updated dependencies. Added periodic memory logger.

src/argv.js

@@ -4,7 +4,11 @@ const config = require('config');
 const yargs = require('yargs');
 const moment = require('moment');
 
-function interpretAfter(after) {
+function interpretAfter(after, ignoreIfEmpty = false) {
+	if (!after && ignoreIfEmpty) {
+		return null;
+	}
+
 	if (!after) {
 		return new Date(0, 0, 0);
 	}
@@ -313,6 +317,6 @@ const { argv } = yargs
 		default: 60000,
 	})
 	.coerce('after', interpretAfter)
-	.coerce('actors-update', interpretAfter);
+	.coerce('actors-update', (after) => interpretAfter(after, true));
 
 module.exports = argv;