- update to 0.28, see Changes:
- META.json fixes (mst)
- also skip the package-stash-conflicts script (Father Chrysostomos)
- make the namespace cache lazy and weak, in case the stash is deleted
- but, this doesn't work on 5.8, so disable the namespace caching
entirely there
- make the leak tests author-only, since some smokers run release tests
- make the leak tests release-only, since they keep randomly failing on
platforms i don't have access to. people are encouraged to submit
patches for these if they are affected.