v0.22.0

Implementation Changes

• fix(ts): do not ship types (#377)

Road to TypeScript

• refactor(ts): improve types (2) (#356)
• refactor(ts): updated lint and fix command to cover gts (#375)
• refactor(ts): added ts style fix for src/iam.ts (#352)
• refactor(ts): Added ts style fix for test/topic.ts (#373)
• refactor(ts): Added ts style fix for test/subscription.ts (#372)
• refactor(ts): Added ts style fix for test/subscriber.ts (#371)
• refactor(ts): Added ts style fix for test/snapshot.ts (#370)
• refactor(ts): Added ts style fix for test/publisher.ts (#369)
• refactor(ts): added ts style fix for src/index.ts (#351)
• refactor(ts): added ts style fix for src/publisher.ts (#357)
• refactor(ts): added ts style fix for src/snapshot.ts (#358)
• refactor(ts): added ts style fix for src/subscriber.ts (#359)
• refactor(ts): added ts style fix for src/subscription.ts (#360)
• refactor(ts): added ts style fix for src/topic.ts (#361)
• refactor(ts): added ts style fix for src/util.ts (#362)
• refactor(ts): added ts style fix for test/connection-pool.ts (#364)
• refactor(ts): added ts style fix for test/histogram.ts (#365)
• refactor(ts): added ts style fix for test/iam.ts (#366)
• refactor(ts): added ts style fix for test/index.ts (#368)
• refactor(ts): added ts style fix for src/connection-pool.ts (#353)
• refactor(ts): added ts style fix for src/histogram.ts (#354)
• refactor(ts): enable noImplicitAny on src/iam.ts (#348)
• added ts style fix for system-test/pubsub.ts (#374)
• chore: ts-ignoring some stuff in tests (#343)

Dependencies

• fix: Pin @types/sinon to last compatible version (#345)
• chore(deps): update dependency @types/sinon to v5.0.7 (#349)

Documentation

• docs(samples): Publish with Retry Setting Example (#355)
• docs: remove outdated comments (#342)

Internal / Testing Changes

• chore: add a synth.metadata
• feat: Add optional delay when calling nack() (#255) (#256)