Packaging a newer version of Solr?

[A.M. Kuchling]

The version of Solr included in Bigtop is 4.9.0, released 2014-06-24
and pretty old at this point.  Solr 4.9 also has a number of known
bugs.  Are there plans to update it to a more recent version such as
5.5.3 or 6.2.0?

--amk