v4.0.0

• 🎨 refactor: Use flat export style. 2b2df10
• 📚 docs(README): Attribute header image. a4ac8e7
• 📚 docs(README): Add heading emoji. d2909d8
• 🤖 chore: Define custom script to run on travis. 925f876
• 🤖 chore(package.json): Add dev script. 74cef5f
• 🤖 config(husky): Configure pre-commit hook. 0b5c7bb
• 🤖 docs: Simplify scripts. 3c1a5d7
• 👕 refactor: Lint all JavaScript files. 0ce53f1
• 🤖 chore(package.json): Configure xo. 502c19f
• 🤖 config(typescript): Create tsconfig.json. 9287522
• 🤖 config(renovate.json): Remove custom automerge key. e0b177f
• 🤖 config(renovate.json): Use shared config. bc17f13
• 🤖 config(release): Customize commit message. 63cd965
• 🤖 docs(README.md): Make travis-ci.org point to travis-ci.com. 4dce4a8
• 🤖 docs(README.md): Use https for homepage URL. e3d9c5f
• 🤖 chore(package.json): Configure prettier. fdb3cf0
• 🤖 chore(package.json): Add lint-and-fix script. f93ec6a
• 🤖 chore(package.json): Add lint script. 98c37d7
• 🤖 chore(package.json): Add debug script. a790d60
• 🤖 config(babel): Sort keys. e96091d
• 🤖 config(babel): Enable sourceMaps files. 04a22b4
• 🤖 config(babel): Setup test environment. 85ce30e
• 🤖 config(babel): Sort environments keys. 9c5d555
• 🤖 chore: Add test key in .babel.env. e2d3e0c
• 🤖 build: Configure microbundle to produce build. a4cda0c
• 🤖 config(babel): Setup production environment. 6f06a8b
• 🤖 chore: Add production key in .babel.env. 90a8205
• 🤖 config(babel): Setup development environment. db068f5
• 🤖 config(babel): Setup debug environment. 02b5c93
• 🤖 chore: Add debug key in .babel.env. 2e35066
• 🤖 config(babel): Setup default presets. e49197f
• 🤖 chore(package.json): Declare module side-effects free. 4df6540
• 🤖 config(husky): Configure commit-msg hook. 35fc22c
• 🤖 config(git-hooks): Setup husky. 8c50b5f
• 🤖 config(github): Configure workflow to automate gh-pages generation. eed7a25
• 🤖 docs: Correctly import regenerator/runtime. c378b0d
• 🤖 docs: Reference regenerator-runtime instead of @babel/polyfill. a7948f0
• 🤖 cleaning(package.json): Remove esdoc script. a867a0a
• 🤖 chore: Add build-docs script. db1c1a9
• 🤖 deps: Use regenerator-runtime instead of @babel/polyfill. fed7765
• 🤖 chore(package.json): Add devDependency xo. 0d1939b
• 🤖 chore(package.json): Add devDependency babel-preset-power-assert. 4dad2b4
• 🤖 chore(package.json): Add devDependency power-assert. 5c27a16
• 🤖 chore(package.json): Add devDependency babel-plugin-unassert. 48bb23e
• 🤖 chore(package.json): Add devDependency babel-plugin-transform-remove-console. c95ccb1
• 🤖 chore: Use c8 instead of nyc. df8a20e
• 🤖 config(ava): Sort keys. da40371
• 🤖 chore: Lint configuration files. 7ba576e
• 🤖 chore(package.json): Add lint-config script. 3045bdb
• 🤖 chore(package.json): Add lint-config-and-fix script. 318fbde
• 🤖 chore(package.json): Remove .git suffix of repository URL. 9e7c8f9
• 🤖 chore(package.json): Use https for homepage URL. 675a09a
• 🤖 config(fixpack): Update or create .fixpackrc. 89b8293
• 🤖 chore(.esdoc.json): Format file. 36e8319
• 🤖 chore(package.json): Add devDependency fixpack. 08550ed
• 🤖 refactor: Use ESM import syntax. a918dac
• 🤖 config(codeclimate): Rename exclude_paths to exclude_patterns. 884bc63
• 🤖 config(codeclimate): Remove obsolete languages key. 2dbd168
• 🤖 chore: Format .codeclimate.yml. d268a80
• 🤖 chore: Remove .codacy.yml. 5fde423
• 😒 chore(README): Link to main branch. 340c98c
• ⬆️ deps: Upgrade. b54b5cf
• 😒 chore: Lock dependencies. 83011cb
• 🎨 style(package.json): Run fixpack. 2222731
• 😒 chore(deps): Upgrade. b07cd54
• 😒 chore(deps-dev): Remove obsolete packages. 70404bd
• ⚙️ ci: Upgrade travis config. aa054f2
• ⚙️ ci: Upgrade renovate config. c2fea11
• ⚙️ ci: Upgrade codeclimate config. 34fc1ad
• ⚙️ ci: Upgrade codacy config. 8863642
• 😒 chore: Upgrade git ignore config. c209bd0
• 😒 chore: Remove generated files. c1f4c45
• 😒 chore: Add release script. 0b69d37
• 😒 chore(package.json): Set .files = ["lib"]. 237a855
• 😒 chore(package.json): prepublish -> prepare. 165421a
• 🔨 build: Upgrade build script. bfddfed
• 🔍 test: Upgrade ava. 5036d5e
• 😒 chore(deps-dev): Upgrade babel packages. d0c7038
• 📚 docs: Upgrade. 3c9a1d8
• 😒 chore: Upgrade README badges. 4f7d6d6
• 😒 chore(deps-dev): Upgrade tool set. 488f366
• Merge pull request #23 from aureooms/greenkeeper/ava-0.21.0 8fd1506
• chore(package): update ava to version 0.21.0 7980be5

v3.1.0...v4.0.0