Bump version up to 0.7.0

Author: greg-1-anderson

src/Runner.php

@@ -9,7 +9,7 @@ class Runner
 {
     use IO;
 
-    const VERSION = '0.6.1';
+    const VERSION = '0.7.0';
     const ROBOCLASS = 'RoboFile';
     const ROBOFILE = 'RoboFile.php';