List your changes for Mahout 0.5

[Sean Owen]

        •       Improved Lanczos solver
        •       Stochastic Singular Value Decomposition implementation
        •       Incremental SVD implementation
        •       Alternating Least Squares with Weighted Regularization
collaborative filtering implementation, both distributed and
non-distributed
        •       SVDRecommender enhancements
        •       Better control over candidate item selection in item-based 
recommenders
        •       Significant removal of deprecated or dead code
        •       Many bug fixes, refactorings and other small improvements

What else?