Fung-Calc version 0.9 released

Release 0.9 includes many major and minor improvements especially to the stability of stat plot. New features include the ability to find the definite integral of a function and a box-and-whisker plot trace. Many interface changes have been made to improve usability.

The previous release may have had some trouble compiling the source code and that has been fixed in this release. Also, the source code is much smaller since many unnecessary files have been removed.