Version 0.4.1

• Fix a bug that causes the program to crash if the destination ICAO is invalid when finding alternate airports.
• Add option to view route in external browser.
• Fix a bug where finding a route from a runway to the same runway causes program to hang.
• Fix a bug that causes fuel calculator to fail to find a valid cruising altitude when the route is very short. (Thanks to Sandro for reporting this bug.)
• Now takeoff and landing calculation pages automatically fill the weather info upon typing ICAO code.
• On fuel planning page, the runway is now automatically selected based on headwind component.
• When the alternating finding form opens, it automatically finds the alternates without clicking on 'find' button.
• Fix a bug that causes the main window to start at very small size when it's last closed while minimized.