refactor BandedMatrix get and set
addToArray for banded matrices
banded matrix refactoring
misc edits
refactor to split up vector type generic tests
remove superfluous constructor
allow passing Random instance as seed
test refactoring
allow matrix construction from any Iterable set of rows
docs
port QRDecompositionHouseholderColumn to HouseholderColQR
add QRDecomposition interface
refactor HouseholderQR
add tests to TestHouseHolderQR
add tests for HouseholderColQR
port LinearSolverQrHouseCol to QRHouseColSolver
Merge pull request #54 from moygit/develop

Changed order of multiplication to use sparseness.
fix error
all tests for QRHouseColSolve work
add solveLeastSquares to Linear