Merge pull request #99 from mars0i/develop

Updated project.clj from current pom.xml
add support for in-place operators: +=, -=, *=, div=

unfortunately /= has namespace issues, hence div=
doc updates
add upper-triangular? and lower-triangular? protcols
PMatrixTypes protocol
update deps
suppress test message
make symmetric? work for higher dimensional matrices
add protocol for get-slice-seq (non-major slices)
better default get-slice-seq
[maven-release-plugin] prepare release core.matrix-0.20.0
[maven-release-plugin] prepare for next development iteration
Merge branch 'develop' (early part)
add default implementation of mmul for 2 vectors
remove guarantees for zero arrays to be mutable
index? function stub
Stub for non-zero-indices function
add non-zero-count
fix stupid mistake
Merge pull request #101 from farrellm/vector-mmul

Add default matrix-multiply for two vectors