Commit dc945f08 authored by David's avatar David

Replace ElasticArray with SmallVec

The elastic-array crate is a fine piece of software but it'd be good to prefer crates that are commonly used in the ecosystem and likely to be well maintained. smallvec is at v1.0 and generally well-regarded.

Related PRs:

	- [parity-common #282](https://github.com/paritytech/parity-common/pull/282)
	– [trie-db #46](https://github.com/paritytech/trie/pull/46)
parent 43eb2eab
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