JuBiotech/calibr8: v6.6.0

What's Changed Updated link to license (still on private repo) by @lhelleckes in https://github.com/JuBiotech/calibr8/pull/50 Scale warning by @maxsiska in https://github.com/JuBiotech/calibr8/pull/51 and https://github.com/JuBiotech/calibr8/pull/52 Added calibr8.fit_scipy_global for global optimization that doesn't need an initial guess by @maxsiska in https://github.com/JuBiotech/calibr8/pull/54 New Contributors @maxsiska made their first contribution in https://github.com/JuBiotech/calibr8/pull/51 Full Changelog: https://github.com/JuBiotech/calibr8/compare/v6.5.3...v6.6.