Samples are now passed by const ref in constructor of BSpline, PSpline,
and RBFSpline.
Change license from GPLv2 to MPLv2
Use plaintext version of MPLv2 license text
Update basic_usage.md

Spelling
Added some comments to evalJacobian and evalHessian. If evaluated
outside the B-spline domain they now return a zero matrix.
Merge branch 'development' of github.com:novacrazy/multivariate-splines into novacrazy-development
Merge branch 'novacrazy-development' into development
SortedDataTable -> DataTable

Missed this when renaming SortedDataTable to DataTable.
Merge pull request #1 from bgrimstad/development

Updated development branch from bgrimstad