#180 suggested recalling the previous window setting when reopening the tracker. But that approach does not work when there is nothing to recall, e.g., when first opening the VST instrument in a DAW. For those situations, we might want have a ~ default settings for the tracker user configurable.

The straightforward approach would be to have a .yml file in the Sointu config directory, which contains the configuration. For example, something like:

fullscreen: true

Or

window-width: 1920
window-height: 1080

But things to consider:

1. Would all the keyboard shortcuts be in this file too? Or are they in a separate file, as they are now?

2. Would we have different config file for the VST and the tracker?

3. How does this play with the idea tracker: keep window size #180? Do we need even tracker: keep window size #180 if we have this config file?

4. Are there any other settings that would be good to be user configurable?