Merge pull request #41 from cmr/master

Update for Cargo
Updated for Rust (0dfc90a): *mut, *const
Merge pull request #42 from ozkriff/master

Updated for Rust (0dfc90a): *mut, *const
Updated for Rust : `box "str"` has been removed; used `"str".to_string()` instead
Merge pull request #43 from paraze/master

Updated for Rust : `box "str"` has been removed; used `"str".to_string()` instead
Update to Rust nightly