Change log for nmea_navsat_driver package

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Change log for nmea_navsat_driver package
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0.3.3 (2013-10-08)

Allow the driver to output velocity information anytime an RMC message is received

Moved to nmea_navsat_driver package
Removed .py extensions from new-in-Hydro scripts
Now uses nmea_msgs/Sentence instead of custom sentence type
nmea_topic_driver reads the frame_id parameter from the sentence, not from the parameter server

Initial release for Hydro
Converted to Catkin
nmea_gps_driver.py is now deprecated and will be removed in I-Turtle. Replacement node is nmea_serial_driver.py .
Refactored code into NMEA parser, common ROS driver and separate nodes for reading directly from serial or from topic.
Bugs fixed: - nmea_gps_driver crashes when a sentence doesn't have a checksum * character ( http://kforge.ros.org/gpsdrivers/trac/ticket/4 ) - Add ability for nmea_gps_driver to support reading from string topic ( https://github.com/ros-drivers/nmea_gps_driver/issues/1 ). Use the nmea_topic_driver.py node to get this support.