Improvements and bug fix

This release includes a bundle of improvements and a bug fix. Due to the renaming of the IRequestInitWithRetry interface, I have created a new major release to attempt to mitigate any potential breaking changes.

Included in this release:

• Rename IRequestInitWithRetry to RequestInitWithRetry and export the interface (@christophehurpeau)
• Use rollup.js to support UMD builds (@dwiyatci)
• Adding support for Request argument (@knotthere)
• Added integration tests for Request argument and URL type (@jonbern)
• Added husky pre-commit script to build project and run tests (@jonbern)
• Upgrade dependencies to fix security warnings

Many thanks for all the contributions for improving this project. It is greatly appreciated! 🙏