Improve mAP performance

[0.7.1] - 2022-02-03

Changed

• Used torch.bucketize in calibration error when torch>1.8 for faster computations (#769)
• Improve mAP performance (#742)

Fixed

• Fixed check for available modules (#772)
• Fixed Matthews correlation coefficient when the denominator is 0 (#781)

Contributors

@Borda, @ramonemiliani93, @SkafteNicki, @twsl

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