Update abstract-leveldown to the latest version 🚀

[greenkeeper]

The devDependency abstract-leveldown was updated from 5.0.0 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

If you are upgrading, please consult the Upgrade Guide.

Changed

• Upgrade airtap devDependency from 0.0.5 to 0.1.0 (#229, #231, #245, 029f56a, #252) (@vweevers, @ralphtheninja)
• Upgrade sinon devDependency from ^5.0.0 to ^6.0.0 (#232) (@ralphtheninja)
• Upgrade standard devDependency from ^11.0.0 to ^12.0.0 (#303) (@ralphtheninja)
• Reject nullish values (#277) (@vweevers)
• Make default _serializeKey and _serializeValue identity functions (#277) (@vweevers)
• Don't coerce keys to strings to check if they're empty, instead check arrays explicitly (#277) (@vweevers)
• Make db property mandatory and public on iterator and chained batch (#257, #309) (@vweevers)
• Align AbstractChainedBatch#_clear with _put and _del (#257) (@vweevers)
• Add AbstractChainedBatch#_write with options (#257) (@vweevers)
• Use level-concat-iterator instead of collectEntries (#246) (@ralphtheninja)
• Document API and test suite (#251, #290, #295, #296, #305) (@vweevers)
• Export test suite as a single function (#271, #293, #297) (@vweevers, @ralphtheninja)
• Use factory function to create db instances in test suite (#258, #268, #282) (@ralphtheninja, @vweevers)
• Isolate snapshot tests so that they can be skipped (#239, #274) (@vweevers, @ralphtheninja)
• Isolate openAdvanced tests so that they can be skipped (#271) (@vweevers)
• Rename abstract/ to test/ (#253) (@vweevers)
• Refactor internal test methods to have the same signature (test, testCommon) (#268, #275) (@ralphtheninja)
• Prefer exports.* over module.exports.* (#276) (@ralphtheninja)
• Tweak copyright years for less maintenance (0b2949a) (@ralphtheninja)

Added

• Add iterator#seek() (#237, #302, #307) (@vweevers, @ralphtheninja)
• Add nyc and coveralls devDependencies for code coverage (#253) (@vweevers)
• Add setUp and tearDown to all sub tests (#279, #289) (@ralphtheninja)
• Add test for implementations that cannot support snapshots (#239) (@vweevers)
• Add hallmark devDependency for Markdown style and contributors (#312) (@vweevers)

Removed

• Remove location (#258) (@ralphtheninja)
• Remove lastLocation, cleanup, rimraf (#249) (@vweevers)
• Remove IE10 from Sauce Labs test matrix (#312) (@vweevers)
• Remove node 9 from Travis (0b52395) (@ralphtheninja)
• Remove tests that assumed support of boolean and NaN keys (#277) (@vweevers)
• Remove range tests that assumed null meant "not defined" (#277) (@vweevers)
• Remove sync test from test/put-test.js (#300) (@ralphtheninja)
• Remove empty errorValues() test (#273) (@ralphtheninja)
• Remove default testCommon parameter (#264, #271) (@vweevers)
• Remove contributors from package.json (542f350) (@ralphtheninja)
• Remove copyright headers from code (a36c04f) (@ralphtheninja)

Fixed

• Make sure all t.throw tests check error messages correctly (#286) (@ralphtheninja)
• Check options objects properly for null (#257, #288) (@ralphtheninja, @vweevers)
• Serialize range options same as keys (#277) (@vweevers)
• Allow nullish and empty range options (#277) (@vweevers)

Commits

The new version differs by 54 commits.

• af12348 6.0.0
• 17328ce Prepare 6.0.0 (#312)
• 5b4c550 Make db property mandatory and public on iterator and chained batch (#309)
• b610da0 Import seek tests from leveldown (#307)
• e7285bb readme: undefined behavior for nullish range options is legit (#305)
• 0f42686 Merge pull request #303 from Level/greenkeeper/standard-12.0.0
• 1170cea chore(package): update standard to version 12.0.0
• a6c733b Fix bug in AbstractIterator#_seek (#302)
• aeabe99 Remove sync test (#300)
• 51af868 Add 'bufferKeys' and 'seek' to skip options (#297)
• 76f0477 add Spread The Word and Install sections (#296)
• 6311fae add test suite documentation (#295)
• adac630 Update upgrade guide [wip] (#272)
• e8415d5 Update changelog for v6 (#291)
• a8aa1c2 Merge testCommon and test options (#293)

There are 54 commits in total.

See the full diff

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