libical Mozilla License

[Allen Winter]

Hi,

See https://github.com/libical/libical/issues/297

I've been reading-up on the MPL versions and I think we should increase from 1.0 to 2.0.
Does anyone object to this?
If you agree please say so.

http://website-archive.mozilla.org/www.mozilla.org/mpl/MPL/1.0/
https://www.mozilla.org/en-US/MPL/1.1/
https://www.mozilla.org/en-US/MPL/2.0/

https://www.gnu.org/licenses/license-list.html#MPL
https://www.gnu.org/licenses/license-list.html#MPL-2.0