Migrated from BigQuery googleapis/python-bigquery#972

* test: disable system test session

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* add pandas to intersphinx

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* actually use dependencies

* add constraints

* fix conflict with numpy

* bump minimum packaging

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

* test: Don't use the equal_nan option of array_equal. It requires new versions of numpy

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* blacken

* fix: support pandas 0.24

* blacken

* remove 'stop on first error'

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Tim Swast <swast@google.com>

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
- [x] Make sure to open an issue as a [bug/issue](https://github.com/googleapis/python-db-dtypes-pandas/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)

Fixes #2 🦕

This builds-on/includes #8, which builds-on/includes #7.

* fix: support converting empty `time` Series to pyarrow Array

* use object dtype for time numpy array

* backport to_numpy

* remove redundant test

🤖 I have created a release \*beep\* \*boop\*
---
## 0.1.0 (2021-09-29)


### Features

* add `time` and `date` dtypes ([f104171](https://www.github.com/googleapis/python-db-dtypes-pandas/commit/f10417111642e8f5f4b9af790367af930d15a056))


### Bug Fixes

* support converting empty `time` Series to pyarrow Array ([#11](https://www.github.com/googleapis/python-db-dtypes-pandas/issues/11)) ([7675b15](https://www.github.com/googleapis/python-db-dtypes-pandas/commit/7675b157feb842628fa731cc6a472aa9e6b92903))
* support Pandas 0.24 ([#8](https://www.github.com/googleapis/python-db-dtypes-pandas/issues/8)) ([e996883](https://www.github.com/googleapis/python-db-dtypes-pandas/commit/e996883bc9c76fe5f593e9c19a9d2a1c13501f5e))
---


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

…22)

* chore: add default_version and codeowner_team to .repo-metadata.json

* update codeowner_team

It is not used by any CI or other script.

Motivated by:
googleapis/python-db-dtypes-pandas#21 (comment)

* fix: avoid rounding problems with microseconds

* add more tests

* adjust regex to parse fraction as integer

🤖 I have created a release \*beep\* \*boop\*
---
### [0.1.1](https://www.github.com/googleapis/python-db-dtypes-pandas/compare/v0.1.0...v0.1.1) (2021-10-04)


### Bug Fixes

* avoid rounding problems with microseconds ([#20](https://www.github.com/googleapis/python-db-dtypes-pandas/issues/20)) ([0ff7371](https://www.github.com/googleapis/python-db-dtypes-pandas/commit/0ff737120344602f49889596b1efa69a6a18a057))
---


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

…le (#25)

Source-Link: googleapis/synthtool@a7ed11e
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:6e7328583be8edd3ba8f35311c76a1ecbc823010279ccb6ab46b7a76e25eafcc

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

…pandas (#32)

* docs: add how-to guide and include API reference

* fix indentation

* fix types in sample

* fix types in sample

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

#35)

* chore(python): push cloud library docs to staging bucket for Cloud RAD

Source-Link: googleapis/synthtool@7fd61f8
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:4ee57a76a176ede9087c14330c625a71553cf9c72828b2c0ca12f5338171ba60

* update replacement in owlbot.py

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Source-Link: googleapis/synthtool@694118b
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:ec49167c606648a063d1222220b48119c912562849a0528f35bfb592a9f72737

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

[![WhiteSource Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [pyarrow](https://arrow.apache.org/) | ` >= 3.0.0, < 6.0dev` -> `>=3.0.0, <6.1` | [![age](https://badges.renovateapi.com/packages/pypi/pyarrow/6.0.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/pyarrow/6.0.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/pyarrow/6.0.0/compatibility-slim/5.0.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/pyarrow/6.0.0/confidence-slim/5.0.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Configuration

📅 **Schedule**: At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#github/googleapis/python-db-dtypes-pandas).

* feat: support Python 3.10

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

…#39)

* feat: support conversion from pyarrow RecordBatch to pandas DataFrame

* hack together working implementation

TODO: add tests for constructing pandas Series with pyarrow scalars

* fix unit test coverage, optimize arrow to numpy conversion

* apply same optimizations to to_arrow conversion

* remove redundant to_numpy now that to_arrow doesn't use it

* be explicit about chunked array vs array

* add docstrings to arrow conversion functions

* add test case for round-trip to/from pyarrow nanosecond-precision time scalars

* add time32("ms") test case without nulls for completeness

🤖 I have created a release \*beep\* \*boop\*
---
## [0.3.0](https://www.github.com/googleapis/python-db-dtypes-pandas/compare/v0.2.0...v0.3.0) (2021-11-08)


### Features

* support conversion from pyarrow RecordBatch to pandas DataFrame ([#39](https://www.github.com/googleapis/python-db-dtypes-pandas/issues/39)) ([facc7b0](https://www.github.com/googleapis/python-db-dtypes-pandas/commit/facc7b0897e27c5ba99399b7d453818c5b4aeca7))
* support Python 3.10 ([#40](https://www.github.com/googleapis/python-db-dtypes-pandas/issues/40)) ([a31d55d](https://www.github.com/googleapis/python-db-dtypes-pandas/commit/a31d55db57b2f5655b1fee4230a930d5bee4b1c9))
---


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

Source-Link: googleapis/synthtool@c5026b3
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:0e18b9475fbeb12d9ad4302283171edebb6baf2dfca1bd215ee3b34ed79d95d7

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

* fix: raise ValueError if date is out-of-bounds

* unify _datetime return type

* add relevant unit test