* What is new in gsl-2.7:
** fixed doc bug for gsl_histogram_min_bin (lhcsky at 163.com)
** fixed bug #60335 (spmatrix test failure, J. Lamb)
** fixed bug #36577
** clarified documentation on interpolation accelerators (V. Krishnan)
** fixed bug #45521 (erroneous GSL_ERROR_NULL in ode-initval2, thanks to M. Sitte)
** fixed doc bug #59758
** fixed bug #58202 (rstat median for n=5)
** added support for native C complex number types in gsl_complex
when using a C11 compiler
** upgraded to autoconf 2.71, automake 1.16.3, libtool 2.4.6
** updated exponential fitting example for nonlinear least squares
** added banded LU decomposition and solver (gsl_linalg_LU_band)
** New functions added to the library:
- gsl_matrix_norm1
- gsl_spmatrix_norm1
- gsl_matrix_complex_conjtrans_memcpy
- gsl_linalg_QL: decomp, unpack
- gsl_linalg_complex_QR_* (thanks to Christian Krueger)
- gsl_vector_sum
- gsl_matrix_scale_rows
- gsl_matrix_scale_columns
- gsl_multilarge_linear_matrix_ptr
- gsl_multilarge_linear_rhs_ptr
- gsl_spmatrix_dense_add (renamed from gsl_spmatrix_add_to_dense)
- gsl_spmatrix_dense_sub
- gsl_linalg_cholesky_band: solvem, svxm, scale, scale_apply
- gsl_linalg_QR_UD: decomp, lssolve
- gsl_linalg_QR_UU: decomp, lssolve, QTvec
- gsl_linalg_QR_UZ: decomp
- gsl_multifit_linear_lcurvature
- gsl_spline2d_eval_extrap
** bug fix in checking vector lengths in gsl_vector_memcpy (dieggsy@pm.me)
** made gsl_sf_legendre_array_index() inline and documented
gsl_sf_legendre_nlm()
344f4641a9