* slight changes functions that use drain
* bug in arrayvec iter
* reverse iter for arrayvec
* nth_back is stable since 1.37
* simpler drain for arrayvec
* soveu forgot to add changed files
* fmt + feature for rustc >= 1.40
* cosmetic changes
* does the ci work now?
* SHNAAAAAAAAATSEEEEEEEEL
* Add ArrayVec::splice and TinyVec::splice
Added for closer API parity with std::Vec
* Fix ArrayVec::splice example typo
* Removed FusedIterator bound from splice
This bound could've caused confusing error messages, and was
inconsistent with the Vec API. splice now uses fuse itself to ensure
consistency. Vec::splice consumes the whole iterator at once, so it
essentially has the same behavior, but this implementation gradually
consumes the iterator as elements are drained, so this fuse is necessary
to keep the behavior the same.
* Reserve additional capacity in TinyVecSplice
Used TinyVec::reserve to pre-allocate space for elements being spliced
into the TinyVec after the splicing iterator is dropped. Used the lower
bound like Vec's splice does.
* Run rustfmt
Soveu