Keep the workflow runtests.jl up to date!!

[rot4te]

Title says it all, communicate your changes.

[lllx125]

I fixed the error from the hydrogen mass. And I added a test to see whether the Unitful units are available to users. The way the test works is that if the units are not available, an error will be thrown and the test would fail.

[lllx125]

The changes are in my lastest pull request.