Improved unittest for Illinois method and fixed bug in assert_true/false
Added option to fzero methods to pass already computed values at interval ends
Added gradient line search and CallStatistics
Added solver and optimisation stuff to sglib
Nonintrusive Galerkin can now also do BFGS
Added comparison with bfgs-nonintrusive
underline can now also center the text
lbfgs_solve: comments and unittest
added enhance_plot method
forgot to do that in an earlier commit
changes and demo for rvmap stuff
added recursive version of lbfgs_solve and unittest
Merge branch 'master' of github.com:ezander/sglib-testing

Conflicts:
	sglib/solver/lbfgs_solve.m
	sglib/solver/unittest_lbfgs_solve.m
Cleaned up some mess left over from the previous merge (in lbfgs_solve)
Renamed kl_to_tensor to kl_to_ctensor, plus some related cleanup
some work on mmse for spde stuff
Some changes for the updating procedures
some renaming in rvmap
[wip] Some cleanup the rvmap stuff
Streamlining and commenting of the MMSE functions
Some fixes in the comments and in the hash function