Elliptical (Gaussian) beams

[MauriceZeuner]

The GaussianReferenceFrame already exists (and has an "ellipticity" attribute) in the new-dipole-force branch but elliptical Gaussian beams are yet to be implemented. Could be useful not only for dipole traps.

[ElliotB256]

@MauriceZeuner might be good to leave this a week incase any newcomers want to have a go?

[MauriceZeuner]

Good idea

[ElliotB256]

Looks like no new users volunteered :( so go ahead :)

[MauriceZeuner]

Will go ahead to implement it via a Frame component in lib::laser::frame.rs
This Frame may or may not used to also define 2D Jones vectors within it. For this, see issue #29

[MauriceZeuner]

Implementation complete - last commit on this is 3261286

[ElliotB256]

Please don't close until merged!