default implementation of QR decomposition added
qr decomposition doc string added
typo in qr decomposition fixed
linear.qr now returns nil if decomposition is impossible
more compliance tests for linear.qr
default implementation of diagonal?, upper- and lower- triangular? added
Merge pull request #148 from Gerrrr/feature/matrix_types

default implementation of diagonal?, upper- and lower- triangular? added
add TODO on broadcast for scalars
orthogonal? predicate implemented
typos in protocol docstrings fixed
Merge pull request #149 from Gerrrr/feature/orthogonal_matrix_predicate

orthogonal? predicate
Merge pull request #147 from Gerrrr/feature/qr-decomposition

default implementation of QR decomposition
Merge branch 'develop' of https://github.com/mikera/core.matrix.git into develop