chore: release 2.0.2 (googleapis#511)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

chore: release 2.0.1 (googleapis#503)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

chore: release 2.0.0 (googleapis#484)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

Release v1.0.1 (googleapis#409)

Release v1.0.0 (googleapis#367)

Release v0.16.1 (googleapis#335)

Release @google-cloud/bigtable v0.16.0 (googleapis#319)

fix: use GCLOUD_PROJECT instead of PROJECT_ID (googleapis#234)

Fix broken system test (googleapis#156)

`if (!isNaN(num) && isFinite(num)) {` is no longer a valid check if the converted number is valid. Instead:

```js
if (Number.MIN_SAFE_INTEGER < num && num < Number.MAX_SAFE_INTEGER) {
```

is used. Also there's no point in trying to convert the buffer to a number if the buffer length isn't `8`

Skip "should delete all rows" test (googleapis#101)