Update memdown to the latest version 🚀

[greenkeeper]

The devDependency memdown was updated from 3.0.0 to 4.0.0.

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 v4.0.0

If you are upgrading: please see UPGRADING.md.

Changed

• Upgrade abstract-leveldown from ~5.0.0 to ~6.0.1 (#174) (@vweevers)
• Invoke abstract tests from single function (#174) (@vweevers)
• Use level-concat-iterator and testCommon.factory() in custom tests (#174) (@vweevers)
• Don't use falsy or undefined as not-defined signal (#174) (@vweevers)
  (@vweevers)
• Upgrade standard devDependency from ^11.0.0 to ^12.0.0 (#173) (@ralphtheninja)
• Upgrade airtap devDependency from ^0.0.5 to ^2.0.0 (#161, #163, #168, #172, #177) (@vweevers)
• Tweak copyright years for less maintenance (760b375) (@ralphtheninja)
• Apply common project tweaks (#178, #179) (@vweevers)

Added

• Add nyc and browser code coverage (#169, #180) (@vweevers)
• Add Sauce Labs logo to README (#165) (@ralphtheninja)
• Document that nullish values are now also rejected (#174) (@vweevers)
• Test negative and positive Infinity as keys (#174) (@vweevers)

Removed

• Remove contributors from package.json (80b3e3a) (@ralphtheninja)
• Remove node 9 (0de8721) (@ralphtheninja)
• Remove now irrelevant serialization of nullish values (#174) (@vweevers)
• Remove dummy location from abstract-leveldown constructor call (#174) (@vweevers)
• Remove rimraf devDependency (#174) (@vweevers)

Fixed

• Fix link references in UPGRADING.md for latest remark (f111a6f) (@vweevers)

Commits

The new version differs by 28 commits.

• 6e2db2f 4.0.0
• f122c87 Prepare 4.0.0 (#181)
• d3101e3 Merge pull request #174 from Level/greenkeeper/abstract-leveldown-6.0.0
• 155ca81 Remove rimraf devDependency (closes #114)
• fdb52a7 Document that nullish values are now also rejected
• 04e32ff Test negative and positive Infinity as keys
• ee0f133 Don't use falsy or undefined as not-defined signal
• f9ed695 Remove now irrelevant serialization of nullish values
• 552f501 Remove dummy location from abstract-leveldown constructor call
• 2e1caf5 Use level-concat-iterator and testCommon.factory() in custom tests
• 35b97ee Invoke abstract tests from single function
• a5a07f9 Upgrade abstract-leveldown from ~5.0.0 to ~6.0.1
• 282b3f8 chore(package): update nyc to version 13.2.0 (#180)
• 51dddb6 Apply common project tweaks (round 2) (#179)
• 40d022f Apply common project tweaks (#178)

There are 28 commits in total.

See the full diff

FAQ and help

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Your Greenkeeper bot 🌴

[vweevers]

Gotta update a test:

ok 79 null & undefined keys & values: null and undefined: put() with null value works
/home/travis/build/Level/[secure]/node_modules/referee/lib/referee.js:204
            throw exception;
            ^
AssertionError: [refute] Expected WriteError: value cannot be `null` or `undefined` to be falsy
    at Object.referee.fail (/home/travis/build/Level/[secure]/node_modules/referee/lib/referee.js:193:25)
    at referee.refute (/home/travis/build/Level/[secure]/node_modules/referee/lib/referee.js:180:21)
    at /home/travis/build/Level/[secure]/test/null-and-undefined-test.js:74:9
    at /home/travis/build/Level/[secure]/lib/[secure].js:8:7082
    at _combinedTickCallback (internal/process/next_tick.js:77:11)
    at process._tickCallback (internal/process/next_tick.js:104:9)

[vweevers]

It's weird we still have these tests because this behavior is not defined by levelup but by the implementation of abstract-leveldown that is passed in.

Soon..