Update pg to version 5.1.0 🚀

[greenkeeperio-bot]

Hello lovely humans,

pg just published its new version 5.1.0.

State	Update 🚀
Dependency	pg
New version	5.1.0
Type	devDependency

This version is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of pg.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

Do you have any ideas how I could improve these pull requests? Did I report anything you think isn’t right?
Are you unsure about how things are supposed to work?

There is a collection of frequently asked questions and while I’m just a bot, there is a group of people who are happy to teach me new things. Let them know.

Good luck with your project ✨

You rock!

🌴

---

The new version differs by 27 commits .

• d1c5fc6 Bump version
• ebb533c Update changelog
• 2fd9c77 Make Query & NativeQuery implement the promise interface (#1047)
• 9b1d16d Remove io.js badge
• 8918c95 Bump version of semver
• 86bd9a1 Bump version
• f0e1622 Update changelog for 5.0
• 01e5d72 Support for defaults.connectionString (#910)
• 90600f2 Adding returnToHead in clientConfig param (#1007)
• 667953f Proper error message for undefined where options (#1022)
• edf4e7f add dependencies badge on readme (#1024)
• c1e52e7 added .npmignore in order to not publish tests to npm (#1025)
• ad2ffce pg.native returns null if pg-native is missing (#950)
• 06743a7 pgpass: Update to 0.0.6 (#1040)
• 13a82ad Update Copyright notice to 2016 (#1036)

There are 27 commits in total. See the full diff.

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This pull request was created by greenkeeper.io.

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[mention-bot]

By analyzing the blame information on this pull request, we identified @fengmk2 and @dead-horse to be potential reviewers

[codecov-io]

Current coverage is 88.54%

Merging #953 into master will not change coverage

@@             master       #953   diff @@
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  Files            85         85          
  Lines          3291       3291          
  Methods         340        340          
  Messages          0          0          
  Branches        613        613          
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  Hits           2914       2914          
  Misses          377        377          
  Partials          0          0          

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