Expose `NativeDate` while keeping time

[majodev]

Hi!

First of all thanks for your efforts, we are using your lib for >2 years to effortlessly test time-dependent code in our CIs and it has been working really great so far.

Just a little enhancement, could you please expose the original NativeDate in your lib to easily work with the real Date while we are actually keeping time? This way things like benchmarking/profiling code could use the real Date constructor while time-dependent code is unaffected.

Kind regards,
Mario

[LinusU]

Good idea 👍

PRs welcome