illumos-priv 0.2.0

Crate providing an interface to illumos's PRIVILEGES(5)
Documentation
0.2.0
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This release changes the function signature for functions modifying a `PrivSet`
from `&self` to `&mut self` since the backing ffi member is actually being
modified. This should convey to the consumer that mutable access is needed so
that rust can enforce the proper borrowing semantics.

* [BUG #4]https://github.com/joyent/rust-illumos-priv/pull/5:
  Fixes PrivSet should consider mutability.