chore: release 2.0.0 (googleapis#1005)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

* docs: add node 8 notice and fix typo

* docs: fix one more typo

chore: release 1.7.3 (googleapis#986)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

docs: update proto comments (googleapis#968)

Co-authored-by: Justin Beckwith <justin.beckwith@gmail.com>

chore: release 1.7.2 on legacy-8 branch (googleapis#949)

chore: release 1.7.1 (googleapis#943)

🤖 I have created a release \*beep\* \*boop\* 
---
### [1.7.1](https://www.github.com/googleapis/nodejs-pubsub/compare/v1.7.0...v1.7.1) (2020-04-06)


### Bug Fixes

* provide missing close() method in the generated gapic client ([googleapis#941](https://www.github.com/googleapis/nodejs-pubsub/issues/941)) ([6bf8f14](https://www.github.com/googleapis/nodejs-pubsub/commit/6bf8f1481a1dea051c47697488e13b6facf20a26))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please).

chore: release 1.7.0 (googleapis#933)

🤖 I have created a release \*beep\* \*boop\* 
---
## [1.7.0](https://www.github.com/googleapis/nodejs-pubsub/compare/v1.6.0...v1.7.0) (2020-03-29)


### Features

* add a close() method to PubSub, and a flush() method to Topic/Publisher ([googleapis#916](https://www.github.com/googleapis/nodejs-pubsub/issues/916)) ([4097995](https://www.github.com/googleapis/nodejs-pubsub/commit/4097995a85a8ca3fb73c2c2a8cb0649cdd4274be))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please).

chore: release 1.6.0 (googleapis#880)

🤖 I have created a release \*beep\* \*boop\* 
---
## [1.6.0](https://www.github.com/googleapis/nodejs-pubsub/compare/v1.5.0...v1.6.0) (2020-03-04)


### Features

* **subscription:** support oidcToken ([googleapis#865](https://www.github.com/googleapis/nodejs-pubsub/issues/865)) ([a786ca0](https://www.github.com/googleapis/nodejs-pubsub/commit/a786ca00bd27a6e098125d6b7b87edb11ea6ea0f))
* export protos in src/index.ts ([f32910c](https://www.github.com/googleapis/nodejs-pubsub/commit/f32910c3a7da5ce268084d7294094912ab696034))


### Bug Fixes

* **deps:** update to the latest google-gax to pull in grpc-js 0.6.18 ([googleapis#903](https://www.github.com/googleapis/nodejs-pubsub/issues/903)) ([78bd9e9](https://www.github.com/googleapis/nodejs-pubsub/commit/78bd9e97a913b5e2aa457c2a28fd849f67bf225e))
* send the ITimestamp protobuf to Pub/Sub for seeking, not JavaScript Date() ([googleapis#908](https://www.github.com/googleapis/nodejs-pubsub/issues/908)) ([0c1d711](https://www.github.com/googleapis/nodejs-pubsub/commit/0c1d711854d7397a0fc4d6e84ed090984a6e05dc))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please).

chore: release 1.5.0 (googleapis#874)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

chore: release 1.4.1 (googleapis#871)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

chore: release 1.4.0 (googleapis#862)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

Co-authored-by: Megan Potter <57276408+feywind@users.noreply.github.com>