chore(main): release 1.1.0 (googleapis#197)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

chore: release 1.0.0 (googleapis#167)

🤖 I have created a release \*beep\* \*boop\*
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## [1.0.0](https://www.github.com/googleapis/python-spanner-sqlalchemy/compare/v0.1.0...v1.0.0) (2021-12-08)


### Features

* add code samples ([googleapis#55](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/55)) ([406c34b](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/406c34bdb21e01a1317c074fab34d87bb3d61020))
* set user-agent string to distinguish SQLAlchemy requests ([googleapis#116](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/116)) ([b5e1a21](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/b5e1a211a0475690feed36fd222a41c216d8fb82))
* support computed columns ([googleapis#139](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/139)) ([046ca97](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/046ca975778f4793e2c37d70d2a602546f9d4699)), closes [googleapis#137](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/137)
* support JSON data type ([googleapis#135](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/135)) ([184a7d5](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/184a7d576a790bbbd049fe80d589af78831379b4))
* support read_only connections ([googleapis#125](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/125)) ([352c47d](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/352c47de7bb4ea1c30b50a7fe5aee0c4d102e80e))
* support stale reads ([googleapis#146](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/146)) ([d80cb27](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/d80cb2792437731c24905c7a6919468c37779c67))


### Bug Fixes

* ALTER COLUMN NOT NULL directive fails because of inappropriate syntax ([googleapis#124](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/124)) ([c433cda](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/c433cda99fd8544810c878328a272a3a9430630f))
* array columns reflection ([googleapis#119](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/119)) ([af3b97b](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/af3b97bfa4b3ed4b223384c9ed3fa0643204d8c9)), closes [googleapis#118](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/118)
* calculate limit value correctly for offset only queries ([googleapis#160](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/160)) ([6844336](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/684433682ed29d9cde8c9898796024cefeb38493))
* correct typo in spanner_interleave_on_delete_cascade keyword ([googleapis#99](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/99)) ([a0ebf75](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/a0ebf758eda351c0a20103f9e8c2243f002b2e6e))
* raise Unimplemented error when creating temporary tables ([googleapis#159](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/159)) ([646d6ac](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/646d6ac24ccd0643b67abff9da28118e0a6f6e55))
* rollback failed exception log ([googleapis#106](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/106)) ([809e6ab](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/809e6abb29f82a7fbe6587d606e8d75283f2a2fe))


### Documentation

* add query hints example ([googleapis#153](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/153)) ([9c23804](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/9c23804746bc8c638b6c22f2cb6ea57778f7fd19))
* reformatted README titles ([googleapis#141](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/141)) ([a3ccbac](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/a3ccbac476679fe8048ed2109e5489b873278c9c))
* update benchmarks ([googleapis#155](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/155)) ([3500653](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/35006536e4de31dbcba022b73f0aadf39bc89e39))


### Miscellaneous Chores

* setup release 1.0.0 ([googleapis#165](https://www.github.com/googleapis/python-spanner-sqlalchemy/issues/165)) ([37a415d](https://www.github.com/googleapis/python-spanner-sqlalchemy/commit/37a415d071d39e99f233a1c15c1c4b89bd436570))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

docs: update to include text about support status (googleapis#96)