Port multidimensional minimization from GSL (gsl/gsl_multimin.h).
Merge pull request #17 from kubkon/master

Port multidimensional minimization from GSL (gsl/gsl_multimin.h).
Update gsl_integration.pxd

Added missing hook to a doubly-adaptive integration routine from GSL: gsl_integration_cquad. Namely:
1) ctypedef struct gsl_integration_cquad_workspace
2) gsl_integration_cquad_workspace_alloc (size_t n)
3) gsl_integration_cquad_workspace_free (gsl_integration_cquad_workspace * w)
4) gsl_integration_cquad (...)
Merge pull request #18 from AlexShevtsov/master

Add gsl_integration_cquad
Port nonlinear least-squares fitting (gsl/gsl_multifit_nlin.h).
Add unittest for multifit_nlin.
Add reference (link) to the GSL example for multifit_nlin.
Merge pull request #19 from kubkon/master

Port nonlinear least-squares fitting (gsl/gsl_multifit_nlin.h).
* like to GSL for Windows

The oscats project keeps newer version of GSL (1.15), and also 64-bit Windows DLL and Headers.
Merge pull request #20 from joonro/patch-2

DOC: Link to GSL-binaries for Windows