Find other examples of conflictual licence change

[ColinFay]

Changing licence can be complex, would be nice to have more examples.

The ones already included are:

• Bootstrap: https://github.com/twbs/bootstrap/issues/2054

• {covr}: https://github.com/ropensci/unconf17/issues/32

• React: https://medium.freecodecamp.org/facebook-just-changed-the-license-on-react-heres-a-2-minute-explanation-why-5878478913b2

For https://github.com/ThinkR-open/licensing-r/blob/dev/02-what-is-license.Rmd#L10

[Cervangirard]

https://wiki.osmfoundation.org/wiki/Licence/Historic/We_Are_Changing_The_License

C'est pas un conflit mais bon..