Add other alignment options

Trying out any custom alignment was not so easy/flexible. The only way I could get it to work was through hard-coding the position values. I didn't spend a ton of time on it, maybe with wrappers and percent you could get something going.


Might need an option to do different alignment, or just an addition to docs to help people out with that.

Start by reproducing the custom-alignment case shown in the issue and inspect how Huebee currently positions its picker. Compare wrapper- and percentage-based approaches, then determine whether the result should be a new alignment option or documentation; done means custom alignment works without hard-coded position values or is clearly documented.

Written by the indexing model from the issue text.