SPy 0.11 adds anomaly detection and ability to save/create hyperspectral image files.

Release 0.11 of Spectral Python (SPy) adds an RX anomaly detector, ability to save and create images in ENVI format (see envi.save_image and envi.create_image), and a unit-testing sub-package. The top-level namespace has been simplified and several functions have been renamed for consistency (image is now open_image and save_image is now save_rgb).