chore: release 5.0.0

[release-please]

🤖 I have created a release *beep* *boop*

5.0.0 (2020-06-19)

⚠ BREAKING CHANGES

• don't return Stream from createLoadJob (refactor!: don't return Stream from createLoadJob #647)
• drop Node 8 from engines field (feat!: drop Node 8 from engines field #662)

Features

• drop Node 8 from engines field (#662) (712b029)
• improved types (40087fa)
• update types.d.ts (#667) (a12b094), closes #662 #662 #647 #647 #640 #640 #647 #661 #661 #658 #658 #8203 #8203 #8203 #8203 #8203 #657 #657 #8203 #8203 #8203 #8203 #8203 #8203 #8203 #8203 #660 #660 #8203 #8203 #8203 #8203 #8203 #8203 #8203 #8203 #8203 #8203 #8203 #8203 #665 #665 #454 #454 #456 #456 #463 #463
• userAgent: allow for optional user agent to be provided (#671) (25aeca8)

Bug Fixes

• add types for hasDrift and seasonalPeriods (#680) (d6c9566)
• deps: update dependency @google-cloud/paginator to v3 (#658) (a09c493)
• apache license URL (#468) (#669) (d3ed602)
• drop dependency on string-format-obj (#698) (cf8f58f)
• load job to a different project ID (#748) (bfb74ad)
• docs: fix link for job configuration load (#678) (ea3d7af)
• selectedFields on getRows not working correctly (#712) (13b7e39)
• deps: update dependency @google-cloud/promisify to v2 (#657) (5d8112c)
• deps: update dependency @google-cloud/storage to v5 (#700) (a2e34ef)
• deps: update dependency google-auth-library to v6 (#660) (3ea642e)
• docs: configuration.copy link (#709) (4a81b1e)
• docs: correct createTablePartitioned sample argument (#701) (9a7520e)
• table: add retries for insert partial failures (#589) (b8639c2), closes #655
• types: drop changes for drift and seasonal (#681) (679d990)

Code Refactoring

• don't return Stream from createLoadJob (#647) (8e26fb5), closes #640 #640

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This PR was generated with Release Please.

[codecov]

Codecov Report

Merging #718 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #718   +/-   ##
=======================================
  Coverage   94.85%   94.85%           
=======================================
  Files           9        9           
  Lines        6389     6389           
  Branches      372      372           
=======================================
  Hits         6060     6060           
  Misses        329      329           

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[sofisl]

@steffnay - Is this OK to merge?

[yoshi-automation]

Release is at https://github.com/googleapis/nodejs-bigquery/releases/tag/v5.0.0