Allow filepath 1.4

Author: jasagredo

lsm-tree/lsm-tree.cabal

@@ -627,7 +627,7 @@ library core
     , contra-tracer           ^>=0.1      || ^>=0.2
     , crc32c                  ^>=0.2.1
     , deepseq                 ^>=1.4      || ^>=1.5
-    , filepath                ^>=1.5
+    , filepath                ^>=1.4      || ^>=1.5
     , fs-api                  ^>=0.4
     , io-classes              ^>=1.6      || ^>=1.7      || ^>=1.8.0.1
     , io-classes:strict-mvar