Update encoding-down to the latest version 🚀

[greenkeeper]

The devDependency encoding-down was updated from 5.0.4 to 6.0.0.

This version is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

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Release Notes for v6.0.0

Changed

• Prefer const over var in README (@ralphtheninja)
• Upgrade abstract-leveldown dependency from ^5.0.0 to ^v6.0.0 (#68) (@ralphtheninja)
• Upgrade standard devDependency from ^11.0.0 to ^v12.0.0 (@ralphtheninja)
• Use full link references in README (#60) (@vweevers)

Added

• Explain serialization (#72) (@vweevers)
• Add nyc and coveralls (#64) (@ralphtheninja)

Removed

• Remove node 9 (@ralphtheninja)
• Remove now superfluous _setupIteratorOptions() (@ralphtheninja)

Commits

The new version differs by 12 commits.

• e5898b1 6.0.0
• 2113cc0 run remark
• 55dd2ed Prepare changelog and upgrade guide for 6.0.0 (#73)
• cc24492 Remove _setupIteratorOptions (#74)
• e9ac247 Explain serialization (#72)
• a517afb const -> var in README
• 7daad9c fix(package): update abstract-leveldown to version 6.0.0 (#68)
• 55074e9 Merge pull request #66 from Level/greenkeeper/standard-12.0.0
• d1b4bf5 chore(package): update standard to version 12.0.0
• 3dee483 Add nyc and coveralls (#64)
• 0467fd0 Remove node 9
• d0a8658 use full link references in readme (#60)

See the full diff

FAQ and help

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Your Greenkeeper bot 🌴

[vweevers]

Tests need updating.

[vweevers]

The failing test is not related to encoding-down. Why didn't the test fail before? 🤔

I think we're hitting a race issue because of the new nullish check in deferred-leveldown that only happens on an opening levelup instance.

No, it happens because the test wraps memdown with encoding-down.