Create experimental branch for matrix-api implementation
Support matrix-api for vectors 
initial matrix-api tests (vector addition)
matrix-api implementation for AMatrix
Matrix addition test
Matrix scale test
Matrix multiply
Matrix multiply test and fix
Test vector transformation
Fix vectorz coercions for 1D and 2D
Fix refer warnings
Update to 0.0.1 version of matrix-api
Ensure vector implementation is imported
Update to use latest core.matrix snapshot
Test adding with persistent vectors
Transform tests (inc. in place)
Vector transform implementation and tests
Update to latest core.matrix 0.0.3