Add apply, Vcat improvements

v0.7.0

use materialize! for triangular operations

Lazy application of functions

This redesigns Mul to be a more general Applied, that is, Mul(A,B) becomes applied(*, A, B).

Fast sum, fix getindex for Mul

v0.5.2

Test #22

v0.5.1

Fix #12 by supporting mixed shapes

Add MulArray/InvArray, Add, and better support for multiple argument Mul

v0.5.0

avoid recursive calls to Mul

Improve Ldiv, Inv, and PInv

v0.4.0

test pinv/inv

Improve Vcat addition

v0.3.2

smarter 2 term vcat

Fix dimension checking in Mul

v0.3.1

Increase coverage

Redesign MulAdd

v0.3.0

default to MulPlus, remove blas macros

Reduce compile time

v0.2.1

reduce compile time, restore general Mul getindex