Cabal revisions of persistent-2.10.5.4

Hackage metadata revisions edit the .cabal file after upload; each diff below is one revision.

 name:            persistent version:         2.10.5.4+x-revision: 1 license:         MIT license-file:    LICENSE author:          Michael Snoyman <michael@snoyman.com>     description: test out our assumption that OverlappingInstances is just for String  library+    build-depends: aeson <1.6+     if flag(nooverlap)         cpp-options: -DNO_OVERLAP