misc edits
bug in mmul of vector and matrix fixed
Merge pull request #158 from Gerrrr/bug/mmul_1x2_dims

bug in mmul of vector and matrix fixed
compliance tests for matrix multiplication
Merge pull request #159 from Gerrrr/bug/mmul_1x2_dims

compliance tests for matrix multiplication
add options to LU decomposition
Merge pull request #160 from prasant94/develop

add options to LU decomposition
[maven-release-plugin] prepare release core.matrix-0.26.0