Beta 2 release... finally.

A lot has been done in the past few weeks to refine SoS, improve compatibility with windows, and add small but useful features to make SoS usable. I am glad to announce the release of SoS 0.9.8 today, which marks the beta 2 stage of SoS. At this stage, SoS can be considered feature completely, fairly stable, and can be used in daily data analysis. Please feel free to test SoS and let us know if you have any comment.