I wrote a package to include angles as a dimension when using Unitful.jl. It allows for dispatching on Angle quantities.

Angles not having a dimension has been the cause of many issues:

#570 #531 #537 #392 #216 #38.

The basic usage is as follows:

```
julia> using Unitful
julia> using DimensionfulAngles
julia> dimensionless_angle = 1u"rad"
1 rad
julia> dimensionful_angle = 1u"radᵃ"
1 rad
julia> typeof(dimensionless_angle)
Quantity{Int64, NoDims, Unitful.FreeUnits{(rad,), NoDims, nothing}}
julia> typeof(dimensionful_angle)
Quantity{Int64, 𝐀, Unitful.FreeUnits{(rad,), 𝐀, nothing}}
```

You can then dispatch functions on angle quantities. One example included in the package is an `Equivalence`

using UnitfulEquivalences.jl that converts between period, frequency, and angular frequency:

f = \frac{1}{T}=\frac{ω}{2π}

```
julia> using Unitful
julia> using DimensionfulAngles
julia> uconvert(u"s", 10u"Hz", Periodic())
0.1 s
julia> uconvert(u"radᵃ/s", 1u"Hz", Periodic())
6.283185307179586 rad s⁻¹
```

I hope some find it useful!

It is also my first Julia package which I used to try to learn all aspects of package creation (testing, documentation, registering, etc.). And I am still very new to Julia. So I could use feedback on any aspect of the project!