v3.1.0

Chores

• Updated dependency jest to 26.6.1
• Updated yarn to 1.22.10 (via policy)
• Updated eslint-config-prettier to 6.14.0
• Updated prettier to 2.1.2
• Updated eslint-plugin-jest to 24.1.0
• Updated eslint to 7.12.0
• Prettify and fix typos in README.md (thanks to @friederbluemle)

Added

• Added flag to include pre-release versions in the deduplication process. (thanks to @marcodejongh)