Create the project

.github/CODEOWNERS

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+*  @chshersh @vrom911

.github/workflows/ci.yml

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+name: CI
+
+# Trigger the workflow on push or pull request, but only for the master branch
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  build:
+    name: ghc ${{ matrix.ghc }}
+    runs-on: ubuntu-16.04
+    strategy:
+      matrix:
+        cabal: ["2.4"]
+        ghc:
+          - "8.10.1"
+
+    steps:
+    - uses: actions/checkout@v2
+      if: github.event.action == 'opened' || github.event.action == 'synchronize' || github.event.ref == 'refs/heads/master'
+
+    - uses: actions/setup-haskell@v1
+      name: Setup Haskell
+      with:
+        ghc-version: ${{ matrix.ghc }}
+        cabal-version: ${{ matrix.cabal }}
+
+    - uses: actions/cache@v1
+      name: Cache ~/.cabal/store
+      with:
+        path: ~/.cabal/store
+        key: ${{ runner.os }}-${{ matrix.ghc }}-cabal
+
+    - name: Build
+      run: |
+        cabal v2-update
+        cabal v2-build --enable-tests --enable-benchmarks
+
+    - name: Test
+      run: |
+        cabal v2-test --enable-tests --test-show-details=direct

.gitignore

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+### Haskell
+dist
+dist-*
+cabal-dev
+*.o
+*.hi
+*.chi
+*.chs.h
+*.dyn_o
+*.dyn_hi
+*.prof
+*.aux
+*.hp
+*.eventlog
+.virtualenv
+.hsenv
+.hpc
+.cabal-sandbox/
+cabal.sandbox.config
+cabal.config
+cabal.project.local
+.ghc.environment.*
+.HTF/
+.hie/
+# Stack
+.stack-work/
+stack.yaml.lock
+
+### IDE/support
+# Vim
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+*~
+tags
+
+# IntellijIDEA
+.idea/
+.ideaHaskellLib/
+*.iml
+
+# Atom
+.haskell-ghc-mod.json
+
+# VS
+.vscode/
+
+# Emacs
+*#
+.dir-locals.el
+TAGS
+
+# other
+.DS_Store

.stylish-haskell.yaml

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+steps:
+  - simple_align:
+      cases: true
+      top_level_patterns: true
+      records: true
+
+  # Import cleanup
+  - imports:
+      align: none
+      list_align: after_alias
+      pad_module_names: false
+      long_list_align: inline
+      empty_list_align: inherit
+      list_padding: 4
+      separate_lists: true
+      space_surround: false
+
+  - language_pragmas:
+      style: vertical
+      remove_redundant: true
+
+  # Remove trailing whitespace
+  - trailing_whitespace: {}
+
+columns: 100
+
+newline: native
+
+language_extensions:
+  - BangPatterns
+  - ConstraintKinds
+  - DataKinds
+  - DefaultSignatures
+  - DeriveAnyClass
+  - DeriveDataTypeable
+  - DeriveGeneric
+  - DerivingStrategies
+  - DerivingVia
+  - ExplicitNamespaces
+  - FlexibleContexts
+  - FlexibleInstances
+  - FunctionalDependencies
+  - GADTs
+  - GeneralizedNewtypeDeriving
+  - InstanceSigs
+  - KindSignatures
+  - LambdaCase
+  - MultiParamTypeClasses
+  - MultiWayIf
+  - NamedFieldPuns
+  - NoImplicitPrelude
+  - OverloadedStrings
+  - QuasiQuotes
+  - RecordWildCards
+  - ScopedTypeVariables
+  - StandaloneDeriving
+  - TemplateHaskell
+  - TupleSections
+  - TypeApplications
+  - TypeFamilies
+  - ViewPatterns

CHANGELOG.md

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+# Changelog
+
+`learn4haskell` uses [PVP Versioning][1].
+The changelog is available [on GitHub][2].
+
+## 0.0.0.0
+
+* Initially created.
+
+[1]: https://pvp.haskell.org
+[2]: https://github.com/kowainik/learn4haskell/releases