Version 4.0.0

Breaking changes

• duplicateItems ➡️duplicateItemsAllowed
• sortFilter ➡️sortFn
• removeItemsByValue ➡️ removeActiveItemsByValue
• setValueByChoice ➡️setChoiceByValue
• Multiple instances are now returned as an array on construction
• The template method passed to callbackOnCreateTemplates now receives classnames as it's first argument (this.config.classNames)

Other changes

• E2E testing with Cypress
• More modular code
• Improved unit test coverage
• Various bug fixes