(core - add mult argument to BandMat.plus_equals_band_of)

Ignore-this: d471c5965b885c3a01e42b4386c4c99e

darcs-hash:20130924022249-3a4db-0e588734377c81b13bd89433a9c944832cf46f5a
core - add more infix operations to BandMat

Ignore-this: 80ae162f11a9bca6e5aa701cdf93fce

darcs-hash:20130924022602-3a4db-2ad15c291c9ecdfae6f172db0bd8d18a15ad4964
linalg - add alternative Cholesky decomposition

Ignore-this: 2504688c42c36473af9f41ec745a4732

darcs-hash:20130924024531-3a4db-8c935db9d9aca4f33fa4bccbad452fa41e7c8c9c
(linalg - add note on symmetric representation to module docstring)

Ignore-this: cea5ee79bb2b489a73308d72e5a4db0c

darcs-hash:20130924030405-3a4db-24cfbe098a308e7e9789af0c1d4193d70df14f8d