Update mongodb to the latest version 🚀

[greenkeeper]

Version 3.1.0 of mongodb was just published.

Dependency	mongodb
Current Version	3.0.7
Type	dependency

The version 3.1.0 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.

It might be worth looking into these changes and trying to get this project onto the latest version of mongodb.

If you have a solid test suite and good coverage, a passing build is a strong indicator that you can take advantage of these changes directly by merging the proposed change into your project. If the build fails or you don’t have such unconditional trust in your tests, this branch is a great starting point for you to work on the update.

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Commits

The new version differs by 130 commits ahead by 130, behind by 1.

• 2a06d1e 3.1.0
• 855bfdb feat(core): bump core dependency to v3.1.0
• cddaba0 feat(Collection): warn if callback is not function in find and findOne
• 36c591d docs(options): options default to null
• e1cdce3 docs(count): document count api changes
• 69e5254 fix(retryWrites): fixes more bulk ops to not use retryWrites
• 124ab31 docs(Collection): fixing documentation for count
• 559c195 fix(db): don't send session down to createIndex command
• 195be0b docs(topologies): clarify sslValidate documentation
• bf49bf2 docs(ensureIndex): undeprecate ensureIndex (#1753)
• 7298c76 revert(collection): reverting collection-mapping features
• 5a9fdf0 fix(cursor): cursor.count not respecting parent readPreference
• 12ff392 fix(bulk): handle MongoWriteConcernErrors
• e0be020 refactor(mongo_client): move floating functions to mongo_client_ops
• 2dba264 docs(transactions): adding examples for transactions

There are 130 commits in total.

See the full diff

FAQ and help

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Your Greenkeeper bot 🌴

[codecov]

Codecov Report

Merging #4855 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4855      +/-   ##
==========================================
- Coverage   92.82%   92.81%   -0.02%     
==========================================
  Files         119      119              
  Lines        8813     8813              
==========================================
- Hits         8181     8180       -1     
- Misses        632      633       +1

Impacted Files	Coverage Δ
...dapters/Storage/Postgres/PostgresStorageAdapter.js	97.2% <0%> (-0.09%)	⬇️

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