feat!(excelreader): only load dtypes for columns specified via use_columns
#721
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| 31s | |
| 1m 27s | |
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| 1m 35s | |
| 4m 32s | |
| 2m 25s | |
| 1m 11s | |
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| 3m 42s | |
| 1m 19s | |
| 1m 33s | |
| 4m 3s | |
| 1m 9s | |
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| 2m 36s | |
| 1m 10s | |
| 1m 19s | |
| 3m 54s | |
| 41m 46s |