Update update-notifier to version 0.7.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

update-notifier just published its new version 0.7.0, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of update-notifier – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging :palm_tree:

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GitHub Release

• Now gracefully handle cases where the user cannot write to its global config file and print a help message
• Show the deferred update message on SIGINT as well as exit

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The new version differs by 4 commits .

• ff17da4 0.7.0
• 3cf4614 show message on sigint as well as exit (#75)
• b1f7dde feat: handle configstore error gracefully (#79)
• e9d4cab meta tweaks

See the full diff.

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