Release 6.2.0.rc9

Shopclass 6.2.0

Back up your database before upgrading: this release rebuilds foreign keys across twenty-four
tables. It also lets sites sell credits and charge for listings, lets people download a copy of
their own data, closes three paths that could execute arbitrary files under the plugins
directory, and removes Google Analytics from the core. Search engines get more to work
with too: every listing index now has its own description and a single canonical.

Full changelog: https://github.com/mindstellar/shopclass/blob/6.2.0.rc9/CHANGELOG.md