[IMPROVE] Easy way to copy value

[jlaprof]

It would be great it there is an easy way to copy/paste the values of the subclasses, for example with the context menu.

[mackysoft]

Hi @jlaprof !

Copy and paste functionality has been added in the latest release.
https://github.com/mackysoft/Unity-SerializeReferenceExtensions/releases/tag/1.2.0