Bug#891978: License of photoswipe

[David Bremner <david@tethera.net>]

Hi Dmitry;

We'd like to include PhotoSwipe in Debian (and hence also in Ubuntu,
Mint, etc...), but the statement

  Script is licensed under MIT license with one exception: Do not create a
  public WordPress plugin based on it, as I will develop it. If you need
  to use it for a public WordPress plugin right now, please ask me by
  email first. Thanks!

is currently blocking us, since it seems to impose specific licensing
conditions that might not fit with the Debian Free Software
Guidelines. Would a slightly weaker version be OK with you? I was
thinking of something like:

  PhotoSwipe is licensed under the MIT license.  Please contact me by
  email before developing a public WordPress plugin based on PhotoSwipe.

Thanks for considering,

David

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