JuliaLang/julia — pull request #8928 by ivarne (2014-11-07 10:46:54+00:00)
Title: Emphasize how `isimmutable` works for types.

Ref: #8760

This adds the remark
```Note that this function works on values, so if you give it a type, it will tell you that a value of ``DataType`` is mutable.```