* Rework storage iterators
* Make sure storage iteration is also accounted for when benchmarking
* Use `trie-db` from crates.io
* Appease clippy
* Bump `trie-bench` to 0.35.0
* Fix tests' compilation
* Update comment to clarify how `IterArgs::start_at` works
* Add extra tests
* Fix iterators on `Client` so that they behave as before
* Add extra `unwrap`s in tests
* More clippy fixes
* Come on clippy, give me a break already
* Rename `allow_missing` to `stop_on_incomplete_database`
* Add `#[inline]` to `with_recorder_and_cache`
* Use `with_recorder_and_cache` in `with_trie_db`; add doc comment
* Simplify code: use `with_trie_db` in `next_storage_key_from_root`
* Remove `expect`s in the benchmarking CLI
* Add extra doc comments
* Move `RawIter` before `TrieBackendEssence` (no code changes; just cut-paste)
* Remove a TODO in tests
* Update comment for `StorageIterator::was_complete`
* Update `trie-db` to 0.25.1