hmatrix-backprop-0.1.2.3: hmatrix operations lifted for backprop

hmatrix operations lifted for backprop, along with orphan instances.

Meant to act as a drop-in replacement to the API of Numeric.LinearAlgebra.Static. Just change your imports, and your functions are automatically backpropagatable.

See README on Github at https://github.com/mstksg/hmatrix-backprop#readme