diagnostic.deprecated precedence with other "diagnostic.*" settings

[RoloEdits]

The current implimentation seems to take the other diagnostic options, for example diagnostic.warn, as a priority and removes any effect the diagnostic.deprecated would have:

I think having a priority of errors and warns first is good, but for situations where the kind of modifiers don't overlap, such as curl on warn and a strikethrough on deprecated, the effects could just blend together. Where they overlap in a modifier, the current behavior is fine. And I have not tested or looked, but the deprecated option seems like it should be prioritized before info, which it may already do.