guichan update?

manaworld 0.0.21 was recently released, and is a necessary upgrade as the single server instance has also been upgraded and will no longer work with the 0.0.20 client. One of the changes in this release is a requirement on guichan 0.5.0. The current version in both FC5 and FC6 is 0.4.0, which won't work. The only other package that I've found that depends on guichan is one that I've submitted for review (sear, #198839). Does anyone know of any other packages that depend on guichan or any other reason that we couldn't upgrade it to 0.5.0? --Mike