Cabal revisions of tree-diff-0.4

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

 cabal-version:      2.2 name:               tree-diff version:            0.4+x-revision:         1 synopsis:           Diffing of (expression) trees. category:           Data, Testing description:     , primitive                    ^>=0.9.0.0     , QuickCheck                   ^>=2.14.2   || ^>=2.15    || ^>=2.16.0.0 || ^>=2.18.0.0     , scientific                   ^>=0.3.8.0-    , semialign                    ^>=1.3.1    || ^>=1.4+    , semialign                    ^>=1.4     , strict                       ^>=0.5     , tagged                       ^>=0.8.8     , these                        ^>=1.2.1