chore: release 2.0.0-dev1 (googleapis#211)

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chore: release 1.7.0 (googleapis#198)

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chore: release 1.6.1 (googleapis#173)

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chore: release 1.6.0 (googleapis#164)

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chore: release 1.5.1 (googleapis#151)

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chore: release 1.5.0 (googleapis#96)

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chore: release 1.4.0 (googleapis#65)

* updated CHANGELOG.md [ci skip]

* updated setup.cfg [ci skip]

* updated setup.py

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chore: release 1.3.0 (googleapis#2)

* updated CHANGELOG.md [ci skip]

* updated setup.cfg [ci skip]

* updated setup.py

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chore(bigtable): release 1.2.1 (#10057)

chore(bigtable): release 1.2.0 (#9916)