API client class v1.1.71

- modified `create_radius_account()` method to make Tunnel Type and Medium optional parameters, contributed by @mreho
- added `advanced_adopt_device()` method for more advanced adoption capabilities, contributed by @Sarrus
- refactored several code sections
- updated connection test script

.gitignore

@@ -10,4 +10,7 @@
 .phpdoc-md
 
 # ignore XML files
-*.xml
+*.xml
+
+# ignore PHPStorm files
+.idea/*