cabal version change

dbf.cabal

+cabal-version:          3.4
 name:                   dbf
 version:                0.0.0.2
 stability:              experimental
 
-cabal-version:          >= 1.6
 build-type:             Simple
 
 author:                 James Cook <mokus@deepbondi.net>
 maintainer:             James Cook <mokus@deepbondi.net>
-license:                PublicDomain
+license:                BSD-3-Clause
 homepage:               https://github.com/mokus0/dbf
 
 category:               Database
@@ -28,8 +28,8 @@ Library
                         Database.XBase.Dbf.Structures
                         Database.XBase.Dbf.Year8
   build-depends:        base >= 3 && <5
-			, binary
-			, bytestring
-			, rwlock
-			, monad-loops
-			, template-haskell
\ No newline at end of file
+    , binary
+    , bytestring
+    , rwlock
+    , monad-loops
+    , template-haskell
\ No newline at end of file