Add org.meteoinfo.ndarray package for multiple dimensional array implementation replace ucar.ma2 package. Add interplate_1d function to support vertical coordinate conversion such as sigma to isobaric. Support violin and nested pie plots. Add position capibility to Axis. Add qucksort algorithm and improve 3D plot. Update gif animation with dpi setting. Speed up interpolation functions using KDTree. Replace Apache Sanselan 0.97-incubator with Apache Commons Imaging 1.0-alpha. Add reproject function in migeo module of geolib package. Add percentile and quantile functions to groupby DataFrame. Add loc and iloc in Series class. Distinguish between corner and center when reading ESRI ASCII grid data.