AttributeError: module 'numpy' has no attribute 'long' when loading library

[wthr]

Hi there,
I tried calling Waveform from surfboard.sound and it told me that there was an error AttributeError: module 'numpy' has no attribute 'long'

np.long was said to be depreceated from Numpy 1.20.0 onwards, but the installation requires Numpy to be newer or equal to version 1.20.0 to avoid failed building wheels issue. Which means that there's inconvenience in downgrade Numpy in order to make the library at least.