Removing only the latest version of a wiki page is broken (Bug 759433)
wikilib's method remove_last_version() requires the use of the method
use_version() of the object histlib.
The problem is, they both inherit from tikilib, but wikilib does not inherit
from histlib, and hence cannot use its methods.
did I miss something or could we just merge all methods of histlib into
wikilib and remove histlib, since it seems like histlib is for wiki-things
If there IS some reason for keeping histlib less wiki-specific, we should
perhaps make wikilib a subclass of histlib.
Thanks for clarifying!