Logical and arithmetic shift operators are the opposite of many other languages

[msullivan]

In rust, arithmetic shift is >>> and logical shift is >>, whereas in Java and Javascript, arithmetic shift is >> and logical shift is >>>.

This seems potentially confusing, and there really isn't any good reason to go with one over the other, so it seems like we might as well just do what other languages do.

[msullivan]

As discussed in the meeting today, probably the best thing to do is to just get rid of >>> and do it based on the type of the value. I'll implement this and submit it for comment.