Adding multiple physical quantities

[baxcoders]

Hello,

as we talked before, we decided to delete previous PR in order to create more requests by splitting the new physical quantities in chunks and help you computing those in a more modular way.

We started with the easiest physical quantities, grouped by 5, and committed in different PRs (#364, #365, #366, #367, #369 ).

We're stopping here for now. We have to be sure that the format of the changes is correct for you in order to prevent invalidation of all requests made with the same structure.

We will proceed with the next changes as soon as we will have green light from those requests.

Thank you for your time.

The BaxTeam

[baxcoders]

Ok, we added the last chunk of units, it was hard but we made it.

Thank you for your advices, we will contribute again with other measure units in the future.

[angularsen]

Thanks for the huge effort adding all those units, look forward to future contributions!