Scalar in arithmetic operations

[CallumECameron]

I like the Scalar type introduced in #889 but it doesn't currently play nicely with the existing quantities. All quantities with arithmetic operations should support Scalar in place of double e.g. Scalar * Acceleration or Angle / Scalar.

[angularsen]

It makes sense I suppose.
I just checked, operator overloads supports implicit cast, so if Scalar implements implicit cast to double then I believe we should be able to reuse all existing operator overloads accepting a double.

Would you be interested in attempting a pull request? I'm happy to assist.
A good place to start is adding Scalar.extra.cs in UnitsNet/CustomCode/Quantities/.

[CallumECameron]

Sounds good, that would work. I have raised a PR, there are a couple of issues but can continue discussion there.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.