v2.2.2

What's New

• Relicensing
  • Update LICENSE to GNU Lesser General Public License v2.1.
  • Update CONTRIBUTING.md to include CLA reference in guidelines.
  • Read more about relicensing here: #12
• Contributor License Agreement
  • Add Contributor License Agreement (CLA) document.
• Update README.md to reflect dependency version change and enhance contribution guidelines.
• Bump version to 2.2.2 in build.gradle.

What's Changed

• Sync master with Release/2.2.1 by @makbn in #44
• Release 2.2.2 draft by @makbn in #57

Full Changelog: v2.2.1...v2.2.2