add stub for extending PMatrixRank
Merge branch 'develop' of github.com:mikera/core.matrix into develop
Merge branch 'develop' of github.com:mikera/core.matrix into develop
remove the stubs for matrix-norm and vector-norm and replave with norm in default.clj
remove default MatrixRank implementation
default implementation for norm + tests
Merge pull request #165 from prasant94/develop

update stub for default implementation of PNorm protocol