diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019 Benjamin Fischer
+Copyright (c) 2014–2020 Benjamin Fischer
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -4,8 +4,31 @@
 [![License](https://img.shields.io/github/license/evolutics/haskell-formatter.svg)](LICENSE)
 [![Package](https://img.shields.io/hackage/v/haskell-formatter.svg)](https://hackage.haskell.org/package/haskell-formatter)
 
+This is [**deprecated**](#deprecation-notice).
+
 The Haskell Formatter formats Haskell source code. It is strict in that it fundamentally rearranges code.
 
+## Deprecation notice
+
+The Haskell Formatter is deprecated. If you think it should still be maintained, please let me know.
+
+Take a look at the following projects, which aim at formatting Haskell code, too.
+
+- [brittany](https://github.com/lspitzner/brittany)
+- [hfmt](https://github.com/danstiner/hfmt)
+- [hindent](https://github.com/mihaimaruseac/hindent)
+- [stylish-haskell](https://github.com/jaspervdj/stylish-haskell)
+
+Personally, I like **hindent,** to which you can migrate as follows.
+
+| Use case                       | Haskell Formatter                                      | hindent                    |
+| ------------------------------ | ------------------------------------------------------ | -------------------------- |
+| Format file in-place           | `haskell-formatter --force --input a.hs --output a.hs` | `hindent a.hs`             |
+| Format multiple files in-place | [Not supported out-of-the-box](#formatting-many-files) | `hindent a.hs b.hs`        |
+| Format stdin to stdout         | `haskell-formatter`                                    | `hindent`                  |
+| Order imports                  | Done by [default](#style-configuration)                | `hindent --sort-imports …` |
+| Get help                       | `haskell-formatter --help`                             | `hindent --help`           |
+
 ## Installation
 
 Install it by running
@@ -107,27 +130,18 @@
 
 # Indentation lengths in characters.
 indentations:
-    class:  8    # "class" and "instance" declarations.
-    do:     3    # "do" notation. 
-    case:   4    # Body of "case" expressions.
-    let:    4    # Declarations in "let" expressions.
-    where:  6    # Declarations in "where" clauses.
-    onside: 2    # Continuation lines which would otherwise be offside.
+  class: 8 # "class" and "instance" declarations.
+  do: 3 # "do" notation.
+  case: 4 # Body of "case" expressions.
+  let: 4 # Declarations in "let" expressions.
+  where: 6 # Declarations in "where" clauses.
+  onside: 2 # Continuation lines which would otherwise be offside.
 
 # Decides which parts of the code to sort.
 order:
-    # Sequence of import declarations.
-    import_declarations: true
+  # Sequence of import declarations.
+  import_declarations: true
 
-    # Entities of import lists.
-    import_entities: true
+  # Entities of import lists.
+  import_entities: true
 ```
-
-## Related Projects
-
-You may like to have a look at the following projects, which aim at formatting Haskell code, too.
-
-- [brittany](https://github.com/lspitzner/brittany)
-- [hfmt](https://github.com/danstiner/hfmt)
-- [hindent](https://github.com/chrisdone/hindent)
-- [stylish-haskell](https://github.com/jaspervdj/stylish-haskell)
diff --git a/format.sh b/format.sh
--- a/format.sh
+++ b/format.sh
@@ -1,4 +1,4 @@
- #!/bin/bash
+#!/bin/bash
 
 set -o errexit
 set -o nounset
diff --git a/haskell-formatter.cabal b/haskell-formatter.cabal
--- a/haskell-formatter.cabal
+++ b/haskell-formatter.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.31.2.
+-- This file has been generated from package.yaml by hpack version 0.33.0.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 2a3ff370b294ff45e9969b40e7fe03b3d4928324aaf898a53fe6abbf81ab4d38
+-- hash: 05d013e35d78adf2e82a413fa6e40acd5e702e70931ad5cb816b2eabdd2a6338
 
 name:           haskell-formatter
-version:        2.0.2
+version:        2.0.3
 synopsis:       Haskell source code formatter
 description:    The Haskell Formatter formats Haskell source code. It is strict in that it fundamentally rearranges code.
 category:       Development
@@ -15,7 +15,7 @@
 bug-reports:    https://github.com/evolutics/haskell-formatter.git/issues
 author:         Benjamin Fischer
 maintainer:     Benjamin Fischer <benjamin.fischer@evolutics.info>
-copyright:      (C) 2014–2019 Benjamin Fischer
+copyright:      (C) 2014–2020 Benjamin Fischer
 license:        MIT
 license-file:   LICENSE
 build-type:     Simple
diff --git a/testsuite/resources/examples/default_style.yaml b/testsuite/resources/examples/default_style.yaml
--- a/testsuite/resources/examples/default_style.yaml
+++ b/testsuite/resources/examples/default_style.yaml
@@ -14,17 +14,17 @@
 
 # Indentation lengths in characters.
 indentations:
-    class:  8    # "class" and "instance" declarations.
-    do:     3    # "do" notation. 
-    case:   4    # Body of "case" expressions.
-    let:    4    # Declarations in "let" expressions.
-    where:  6    # Declarations in "where" clauses.
-    onside: 2    # Continuation lines which would otherwise be offside.
+  class: 8 # "class" and "instance" declarations.
+  do: 3 # "do" notation.
+  case: 4 # Body of "case" expressions.
+  let: 4 # Declarations in "let" expressions.
+  where: 6 # Declarations in "where" clauses.
+  onside: 2 # Continuation lines which would otherwise be offside.
 
 # Decides which parts of the code to sort.
 order:
-    # Sequence of import declarations.
-    import_declarations: true
+  # Sequence of import declarations.
+  import_declarations: true
 
-    # Entities of import lists.
-    import_entities: true
+  # Entities of import lists.
+  import_entities: true