The guide details the general pitfalls such users may encounter when
upgrading a patchwork. Upgrading older deployments of patchwork,
particularly those that are pre-1.0, can be a daunting task and this
guide should support users in this task. However, it should not
replace the UPGRADING document but rather supplement it with more
general, non-version specific advice.
Signed-off-by: Stephen Finucane <stephen.finucane@intel.com>