Bump version to 2.1.0-beta.7 🎉 and update changelog.

Author: microbit-carlos

CHANGELOG

@@ -1,3 +1,11 @@
+2.1.0-beta.7
+------------
+* Update the MicroPython version to commit 44a75bb
+* Update the microbit-fs library to adebf8b
+* Add info message on the WebUSB modal when a full flash is performed
+* Minor updates in the tests
+* Other minor bug fixes
+
 2.1.0-beta.6
 ------------
 * Update the MicroPython version to commit 3e09245a46

editor.html

@@ -78,7 +78,7 @@
         </script>
         <script type="application/javascript">
             // VERSION INFORMATION
-            EDITOR_VERSION = "2.1.0-beta.6";
+            EDITOR_VERSION = "2.1.0-beta.7";
             UPY_1_VERSION = "1.0.1";
             UPY_2_VERSION = "2.0-44a75bb";
         </script>