add yield to an already existing project
I'm working on my first project in unity, and i've gotten to the point where i want to wait time. I've seen online the best way to do this is to use yield, but it won't let me because i havent installed the package, and the package won't install because I don't have a portable class library. And the only way I've seen online to get a portable class library is to start a new project. I'd rather not restart, so is there any way to get this to work?
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