Saving tables as parquet#40

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siranipour wants to merge 9 commits intomasterfrom

Commits on Feb 10, 2021

Saving tables as parquet
siranipour
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Sometimes we don't have a multiindex
siranipour
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Commits on Feb 16, 2021

refactoring
siranipour
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Commits on Feb 18, 2021

Raising exception instead of silent conversion
siranipour
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Handling table format in CLI
siranipour
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Adding option to save multiple table formats
siranipour
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Commits on Mar 31, 2021

Removing pyarrow as a reportengine dependency
siranipour
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Changing default table format to CSV
siranipour
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Adding check to see if parquet is installed
siranipour
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