memory-db 0.26.0

In-memory implementation of hash-db, useful for tests
Documentation
# Changelog

The format is based on [Keep a Changelog].

[Keep a Changelog]: http://keepachangelog.com/en/1.0.0/

## [Unreleased]

## [0.26.0] - 2021-01-27
- Update `parity-util-mem`.

## [0.25.0] - 2021-01-05
- Update `parity-util-mem` and `hashbrown`, removed `heapsize`. [#118]https://github.com/paritytech/trie/pull/118

## [0.24.1] - 2020-07-20
- Add `shrink_to_fit` method. [#102]https://github.com/paritytech/trie/pull/102

## [0.24.0] - 2020-07-07
- Disable memory tracking for no_std target by default. [#99]https://github.com/paritytech/trie/pull/99

## [0.22.0] - 2020-07-06
- Type parameter to count `malloc_size_of` on memory-db. [#94]https://github.com/paritytech/trie/pull/94
- Update hashbrown to 0.8. [#97]https://github.com/paritytech/trie/pull/97

## [0.20.0] - 2020-03-21
- Update parity-util-mem to v0.6 [#82]https://github.com/paritytech/trie/pull/82

## [0.19.0] - 2020-02-07
- Update parity-util-mem to v0.5.1 [#78]https://github.com/paritytech/trie/pull/78