Pipelinewise-target-bigquery

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- bump joblib to 1.1.0 to fix issue https://github.com/transferwise/pipelinewise-target-bigquery/issues/7
- bump test dependencies
- remove unused code

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- Minor internal bugfixes

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- Add location BigQuery configuration
- Fix for reserved table names
- Fix for bad decimals
- Improved logging of bad data
- Refactor code to make it more similar to other taps
- Truncate big numbers to the maximum range for NUMERIC in BigQuery
- Fix an issue when loading table names with reserved keywords

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- Fixed an issue when the source tap can include uppercase primary keys

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- Initial release