v3.0.0

BREAKING CHANGE FROM CONSUMER POINT OF VIEW
Rework library's build:

• Remove webpack
  • Transpile src to JavaScript using babel-preset-typescript + babel-preset-env
  • Add "active"/"modern" browserslist config
  • Transform JavaScript closest to our browser targets using bugfixes option
  • Transpile individual source files instead of bundling
• Migrate unit tests from mocha/should/sinon to Jest
• Upgrade all dev dependencies
• Improve package's scripts:

Thanks @ziir