Julia stupid memory allocation bug workaround

DifferentiableFN sums and squares

Fix Linops to use AbstractMatrix instead of Matrix

Add basic Func to DifferentiableFN

Define some basic operations for MatrixOps

Improve MatrixOp parametrisation

Add "extra" string output to simple_iterate.

Add DifferentiableFN

Add abstract LinOps

norm₁

proj_nonneg!

Improve example in README

LICENSE update; option (c).

Add license from Borgend.

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mercurial