extend PNorm protocol
extend protocol for rank
Merge branch 'develop' of github.com:mikera/vectorz-clj into norm
use alias for clojure.core.matrix.li
add tests
handle case where p is infinity
update pom to use vectorz 0.37.0
update vectorz to 0.38.0
more tests for norm
Merge pull request #34 from prasant94/norm

extend PNorm and PMatrixRank protocols