import cleanup
some docs.
make AdaptiveGradientDescent take a few "false steps" in order to get a feel for second derivative.
fix some scaladoc warnings.
expose dimension in TriangularArray.
add a message explaining jblas error.
GradientTester for just testing the gradient.
added more helpful messages to LBFGS when backing off.
Merge branch 'master' of github.com:dlwh/breeze
improved the no-native libraries warning a bit
fix NPE in TriangularArray.toString
potential speedup for SparseVectors
fixes #28
add a "skipZeros" field to GradientTester
add convergence checks to iterations in FirstOrderMinimizer
a little more documentation for sparsevector.
addArrays for Scaling.
better hash code for OAH.
fix to initial sizes for open address hash array.
ease up on some convergence criterion