Version 5.0.1

[marcbachmann]

Would nice to get the state on main released. I just published to npm, but cannot merge this package.json version update to the main branch without approval.

Changelog

• Fix incorrect typings for compile get/set methods (#58, thanks to @haakemon)
• Fix null values throwing exception when traversing over while getting (#50, thanks to @reckter)
• Fix tests for null and undefined assertions (https://github.com/janl/node-jsonpointer/pull/50/commits/ae0d5ece38f4b33a4bd7596fe98b2ff02dcaf7e8)