updates for upcoming vectorz 0.18 release
improve coercion and tests
misc edits
README updates
switch to released version of Vectorz 0.18.0
implement as-double-array for mikera.arrayz.Array
extend cross-product for INDArray
more protocol implementation
AMatrix coercion and protocol implementations
more protocol implementations
extra protocol implementation for normalise!
add INDArray join implementation
test and fix INDArray join
more testing and edits
apply op to AScalar
doc edits
more README edits
[maven-release-plugin] prepare release vectorz-clj-0.13.0