bdc92f10e7
Added the `Option::unzip()` method * Adds the `Option::unzip()` method to turn an `Option<(T, U)>` into `(Option<T>, Option<U>)` under the `unzip_option` feature * Adds tests for both `Option::unzip()` and `Option::zip()`, I noticed that `.zip()` didn't have any * Adds `#[inline]` to a few of `Option`'s methods that were missing it