diff --git a/vault.cabal b/vault.cabal
index 7724519..35ee276 100644
--- a/vault.cabal
+++ b/vault.cabal
@@ -1,72 +1,72 @@
-Name:               vault
-Version:            0.3.1.5
-x-revision: 5
-Synopsis:           a persistent store for values of arbitrary types
-Description:
-  A /vault/ is a persistent store for values of arbitrary types.
-  It's like having first-class access to the storage space behind IORefs.
-  .
-  The data structure is analogous to a bank vault,
-  where you can access different bank boxes with different keys;
-  hence the name.
-  .
-  Also provided is a /locker/ type, representing a store for a single element.
-
-Category:           Data
-License:            BSD3
-License-file:       LICENSE
-Author:             Heinrich Apfelmus, Elliott Hird
-Maintainer:         Heinrich Apfelmus <apfelmus at quantentunnel de>
-Homepage:           https://github.com/HeinrichApfelmus/vault
-Copyright:          (c) Heinrich Apfelmus 2011-2013
-
-build-type:         Simple
-cabal-version:      >= 1.10
-Tested-With:         GHC == 7.6.3
-                    ,GHC == 7.8.4
-                    ,GHC == 7.10.3
-                    ,GHC == 8.0.2
-                    ,GHC == 8.2.2
-                    ,GHC == 8.4.4
-                    ,GHC == 8.6.5
-                    ,GHC == 8.8.3
-                    ,GHC == 8.10.1
-
-extra-source-files:
-    CHANGELOG.md
-    README.md
-    src/Data/Vault/IO.h
-    src/Data/Vault/ST/ST.h
-    src/Data/Vault/ST/backends/GHC.h
-
-source-repository head
-    type:           git
-    location:       git://github.com/HeinrichApfelmus/vault.git
-
-flag UseGHC
-    description: Use GHC-specific packages and extensions.
-    default:     True
-
-Library
-    hs-source-dirs:     src
-    build-depends:      base >= 4.5 && < 4.20,
-                        containers >= 0.4 && < 0.8,
-                        unordered-containers >= 0.2.3.0 && < 0.3,
-                        hashable >= 1.1.2.5 && < 1.5
-
-    if impl(ghc < 8.0)
-        build-depends:  semigroups >= 0.1 && < 1.0
-
-    default-language:   Haskell2010
-    default-extensions: CPP
-    ghc-options:        -Wall -fno-warn-missing-signatures
-
-    exposed-modules:
-                        Data.Vault.Lazy,
-                        Data.Vault.Strict,
-                        Data.Vault.ST.Lazy,
-                        Data.Vault.ST.Strict,
-                        Data.Unique.Really
-
-    if impl(ghc) && flag(UseGHC)
-        CPP-options:    -DUseGHC
+Name:               vault
+Version:            0.3.1.5
+x-revision: 5
+Synopsis:           a persistent store for values of arbitrary types
+Description:
+  A /vault/ is a persistent store for values of arbitrary types.
+  It's like having first-class access to the storage space behind IORefs.
+  .
+  The data structure is analogous to a bank vault,
+  where you can access different bank boxes with different keys;
+  hence the name.
+  .
+  Also provided is a /locker/ type, representing a store for a single element.
+
+Category:           Data
+License:            BSD3
+License-file:       LICENSE
+Author:             Heinrich Apfelmus, Elliott Hird
+Maintainer:         Heinrich Apfelmus <apfelmus at quantentunnel de>
+Homepage:           https://github.com/HeinrichApfelmus/vault
+Copyright:          (c) Heinrich Apfelmus 2011-2013
+
+build-type:         Simple
+cabal-version:      >= 1.10
+Tested-With:         GHC == 7.6.3
+                    ,GHC == 7.8.4
+                    ,GHC == 7.10.3
+                    ,GHC == 8.0.2
+                    ,GHC == 8.2.2
+                    ,GHC == 8.4.4
+                    ,GHC == 8.6.5
+                    ,GHC == 8.8.3
+                    ,GHC == 8.10.1
+
+extra-source-files:
+    CHANGELOG.md
+    README.md
+    src/Data/Vault/IO.h
+    src/Data/Vault/ST/ST.h
+    src/Data/Vault/ST/backends/GHC.h
+
+source-repository head
+    type:           git
+    location:       git://github.com/HeinrichApfelmus/vault.git
+
+flag UseGHC
+    description: Use GHC-specific packages and extensions.
+    default:     True
+
+Library
+    hs-source-dirs:     src
+    build-depends:      base >= 4.5 && < 4.20,
+                        containers >= 0.4 && < 0.8,
+                        unordered-containers >= 0.2.3.0 && < 0.3,
+                        hashable >= 1.1.2.5 && < 1.5
+
+    if impl(ghc < 8.0)
+        build-depends:  semigroups >= 0.1 && < 1.0
+
+    default-language:   Haskell2010
+    default-extensions: CPP
+    ghc-options:        -Wall -fno-warn-missing-signatures
+
+    exposed-modules:
+                        Data.Vault.Lazy,
+                        Data.Vault.Strict,
+                        Data.Vault.ST.Lazy,
+                        Data.Vault.ST.Strict,
+                        Data.Unique.Really
+
+    if impl(ghc) && flag(UseGHC)
+        CPP-options:    -DUseGHC