`MaybeUninit::read` has been renamed into `assume_init_read`

[timothee-haudebourg]

Hi,

yesterday the MaybeUninit::read function has been renamed into assume_init_read via this commit. It has been briefly discussed here before that. Of course this means that staticvec does not compile with the lastest nightly build.

    --> src/lib.rs:1693:29
     |
1693 |       unsafe { Ok(self.data.read()) }
     |                             ^^^^ method not found in `MaybeUninit<[T; N]>`

[slightlyoutofphase]

I've fixed this issue myself now, as it was the first thing I noticed when I tried to compile the crate earlier today with the latest nightly. Thanks for being proactive though!