• Fix #19 - Add Help Activity
• Show satellites in sky view that don't have signal strength
• Fix #71 - Show PDOP, HDOP, and VDOP values
• Fix #70 - Give used sats bold outline in sky view
• Fix #22 - Show altitude above mean sea level (geoid)
• Fix #68 - Add number of sats used/in view
• Fix #69 - Add "What's New" dialog
• Fix #67 - Only prompt user to install Google Maps once