* Virtually the entire list that was originally on Sourceforge, except for some dictionaries with unclear or questionable licences.
* Without the Webster's duplicates. The GCIDE (GNU Collaborative International Dictionary of English), already included, is the extended version of it.
* Without Freelang. To "dissociate" dictionaries, the permission of individual authors has to be obtained.
Many thanks to @avsej who prepared it all.
See https://github.com/koreader/koreader/pull/3176#issuecomment-447085441
