Use more React hooks and update tests

This release:

• adds extensive usage of React Hooks
• updates the unit tests to use React Testing Library
• adds more unit tests
• updates all dependencies
• updates the Demo

Allow controlling from outside

This release adds the ability to control the component from outside - for example from a parent component.
To do so, a React.Ref should be used. The Ref's current reference contains several methods including the ability to slide to the previous or next slides, to change the slide index programmatically, to retrieve the slide index programmatically or to get the array of items used by the component.

Update dependencies

This release lists the correct dependencies and peerDependencies in the package.json file.

Updated metadata

This release does not introduce any code changes.
It updates the package metadata, various configuration settings and the demo.

Updated peer dependencies

This release fixes the range of the peer dependencies - react and react-dom.
This release also updates all development dependencies to their latest versions, possibly fixing a lot of security issues.

Updated dependencies + better CSS support

This release:

1. Updates all dependencies
2. Introduces vendor prefixes in the stylesheet

Initial release

This is the package's initial release