Feature request: Cue points

There's Mp3tag support lacking for only one type if metadata I use: cue points.

Please consider adding it. Basic numeric representation would be fine for me.

But I don't know how you'd add good support (e.g. a pseudo-field) without breaking change. E.g. one certainly does not want scripts that preserve cue points on current versions to strip them on a new version.

Any suggestions from other cue point users?