The most significant changes in 4.0 include:
o Time-series support
o New Tools:
- gmt2rgb
- grdblend
- pslegend:
o 30 new program options
o More than 23 general enhancements
The releases 4.1 and 4.1.1 to 4.1.4 include the following changes:
o numerous significant bug fixes
o many added program options
o added features and capabilities
For a complete list of changes, see
http://gmt.soest.hawaii.edu/gmt/gmt_releases.html
