Suggestion: Flags to specify log level on 'develop'

[Psykoral]

Issue: Warnings are spammed in the build terminal

WARN: "app" is not in the current scope, so it is being read from the parent scope.
This will not happen automatically in an upcoming release. See https://canjs.com/doc/can-stache.scopeAndContext.html#PreventingScopeWalking.

While handy for something to address in due time, it also spams so many of them that I can't see if any actual errors are occurring. Can there be a flag in the run command where the developer can specify what level of logging they desire?

Something like: done-serve --develop --log-level error or done-serve --develop --log-level warn

[matthewp]

Great idea! We'd first need the option in done-ssr. I think https://github.com/canjs/can-log is the package that matters here, so we could probably have done-ssr set this package's log-level, but totally seems doable to me.