v4.0.0

Bug Fixes

• deps: update dependency google-gax to v1 (#402) (547f1a1)
• correct Long types import (#358) (dfe1def)
• DEADLINE_EXCEEDED is no longer retried (47eedf0)
• DEADLINE_EXCEEDED retry code is idempotent (#403) (2a7c3ab)
• deps: update dependency @google-cloud/projectify to v1 (#391) (761896b)
• deps: update dependency @google-cloud/promisify to v1 (#392) (94a45bd)
• deps: update dependency arrify to v2 (2b47d10)
• deps: update dependency google-auth-library to v4 (#400) (19bc787)
• deps: update dependency google-gax to ^0.26.0 (#386) (29b81e3)
• include 'x-goog-request-params' header in requests (#372) (d91be05)
• lint (#384) (9a4d746)
• docs: move ts overloads above doc string (#356) (a7f1123)

Build System

• upgrade engines field to >=8.10.0 (#388) (a8cf59f)

BREAKING CHANGES

• upgrade engines field to >=8.10.0 (#388)