platform updates
Initial WAI 3.0 support, one test still failing
Various additional WAI 3.0 fixes
Merge remote-tracking branch 'origin/master' into wai3
Version bumps
Remove transformers upper bounds
Merge branch 'wai3'

Conflicts:
	yesod-core/yesod-core.cabal
	yesod-form/yesod-form.cabal
	yesod-persistent/yesod-persistent.cabal