* feat: to_datetime supports utc=False for string inputs

* 🦉 Updates from OwlBot post-processor

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* add unit tests for timestamp inputs

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* simplify conversion ops

* address comments

* fix failed presubmit test

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Co-authored-by: Trevor Bergeron <[email protected]>

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:
- [ ] Make sure to open an issue as a [bug/issue](https://togithub.com/googleapis/python-bigquery-dataframes/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
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Fixes #<issue_number_goes_here> 🦕

…h as on Windows (#681)

* chore: type check with mypy `--check-untyped-defs` option

* add TODOs for tests/system/small/ml/test_metrics.py

* add TODOs for tests/system/large/ml/test_cluster.py

* add TODOs for tests/system/large/ml/test_decomposition.py

* more TODOs

* test_dataframe TODOs

* tests/system/small/test_encryption.py TODOs

* test_index TODOs

* TODO test_index, test_multiindex

* tests/system/small/test_pandas.py TODOs

* test_series TODOs

* more TODOs

* tests/system/large/ml/test_ensemble.py TODOs

* more TODOs

* more TODOs

* add final TODOs

* add bug number

* test: stop checking ml large tests exact numbers

* clean up

…tion tutorial (#678)

This aligns the Python code with the SQL at https://cloud.google.com/bigquery/docs/logistic-regression-prediction#create_a_logistic_regression_model

```sql
CREATE OR REPLACE MODEL
  `census.census_model`
OPTIONS
  ( model_type='LOGISTIC_REG',
    auto_class_weights=TRUE,
    data_split_method='NO_SPLIT',
    input_label_cols=['income_bracket'],
    max_iterations=15) AS
SELECT * EXCEPT(dataframe)
FROM
  `census.input_data`
WHERE
  dataframe = 'training'
```

)

)

…et (#689)

* fix: `read_gbq_table` respects primary keys even when `filters` are set

Closes internal issues 338039517 (primary key inconsistency), 338037499
(LIMIT for max_results), 340540991 (avoid running query immediately if
time travel is supported), 337925142 (push down column filters to when
we create the time travel subquery).

feat: `read_gbq` suggests a correct column name when one is not found
feat: `read_gbq_query` supports `filters`
perf: use a `LIMIT` clause when `max_results` is set
perf: don't run query immediately from `read_gbq_table` if `filters` is set

#699)

* fix: Properly identify non-unique index in non-pk tables

* fix previously unused code

* fix unit tests

* fix one more unit test

* fix index uniqueness under no index

* add unit test

* fix: ignore type error in plotting

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:
- [ ] Make sure to open an issue as a [bug/issue](https://togithub.com/googleapis/python-bigquery-dataframes/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
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- [ ] Code coverage does not decrease (if any source code was changed)
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Fixes internal #340890167, 340891711, 340876028🦕

…`, creating an indexless DataFrame/Series (#662)

* feat: Support indexless dataframe/series

* fixes for kurt, skew, median

* fix unit tests

* fix more issues

* fix defaulting to primary key logic

* fix tests

* many small changes

* fix accidental null indexes and raising warning

* fix df quantile index

* disable legacy pandas for some tests, add concat test

* fix series repr

* Update bigframes/session/__init__.py

Co-authored-by: Tim Sweña (Swast) <[email protected]>

* Update bigframes/core/rewrite.py

Co-authored-by: Tim Sweña (Swast) <[email protected]>

* Update bigframes/core/rewrite.py

Co-authored-by: Tim Sweña (Swast) <[email protected]>

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* pr comments addressed

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