Changes:

1.5 (20120328):
  GPX format correctly handled by considering track, route and waypoints (problem
      reported by Arnaud LE BRETON).

1.4 (20110311):
  New option: Do not load empty vector layers.
  Now it is possible to select "All listed formats" from the format filter.
  New vector and raster formats added.

1.3.1 (20110307):
  Use QSettings locale instead of QLocale system locale.
  Set the icon() method in __init__.py to show the plugin icon in the manage window.
  Disable "Add groups" option in QGis v.1.6 since there are some bugs caused by 
      nested groups addition

1.3 (20101025):
  Avoided a legendInterface bug in QGIS 1.4 related to setLayerVisible().

1.2 (20101021):
  Use of the setRenderFlag method to avoid refreshing the canvas unnecessarily.
  A new dialog included when there are no files to load.

1.1 (20101020):
Reported by Milena Nowotarska:
  Handle of special characters in directories and alphanumeric filters.
  Save settings on tab switches.

1.0 (20101018):
  First version
