v0.5.4

Update README.md

Alpha 2017/2/27

1. Excel file download button
2. Options greyed out when not applicable

Alpha 2016/6/22

1. Enable general years dataset between 1979~2009

Alpha 2016/6/2

1. Fixed leap year calculation
2. Fixed wind speed magnitude
3. Avoid Chinese characters in project name

Alpha 2016/5/17

1. Average dataset for years 1979~2009
2. Conversion tool for "average dataset"
3. Adjust starting map view

Alpha 2016/5/5

1. Moved initial map center to 10S 160E
2. Added equator, 180th meridian, and prime meridian to map
3. Available map dataset: 1979, 1982, and 1979~2009 average
4. Added constant sail direction mode

Initial release

v0.1.0-alpha

Release 0.1.0