The Design of Communication with Beatmap Editor(s)

[hozuki]

To integrate editors (e.g. future versions of Starlight Director) and MilliSim as well as to avoid a redundant copy of live previewing code, there should be a communication design between them. When this communication mechanism is applied, a user will be able to edit beatmaps in Starlight Director, and start live preview in an attached MilliSim instance.

An initial consideration is LSP. Details are being planned.

This should be a major upgrade. This task should start after base APIs are stablized.