License updated to Gnu Lesser General Public License, version 3

[adcroft]

As of September 8, 2017, commit 6595cdd, the license shipped with "icebergs" has been updated to version 3 of the Gnu Lesser General Public License. Permission to change the license was obtained from all contributors that had contributed under the previous license (as recorded by git and on GitHub) .

If you have a fork of NOAA-GFDL/icebergs predating the change in license, you are not obliged to change the license. The new license only applies to versions of icebergs newer than September 8, 2017 which have the new license file. You can keep the old license by not updating to our latest code. However, we ask that you accept the new license by updating to the latest code on the dev/master branch. We will not accept pull requests for contributions unless they are made under the new license.

In a nutshell: we replaced the GPLv3 license with the LGPLv3 license that allows NOAA-GFDL/icebergs to be used within a coupled model that might not be using a compatible license. If you have questions, please reach out to us on this thread or by email.