This slight modification to the selection algorithm avoids the situation in
which too many objects are chosen for a given artist and fewer than N objects
are eventually returned. We do this by implementing "selection without
replacement" literally: we choose objects one at a time and pop them from the
population when they are selected.
Renamed fuzzy_search to fuzzy and rdm to random. These names should be easier
to remember since they are the same as the commands they provide.
--HG--
rename : beetsplug/fuzzy_search.py => beetsplug/fuzzy.py
rename : beetsplug/rdm.py => beetsplug/random.py
rename : docs/plugins/fuzzy_search.rst => docs/plugins/fuzzy.rst
rename : docs/plugins/rdm.rst => docs/plugins/random.rst
