Hackers hijacked NPM libraries in a massive supply chain attack, injecting malware that swaps crypto wallet addresses to steal funds.

Originally in v1.0.0 I was using a rather slow and tedious method that involved converting the string into a binary representation of it's character's indexes in a predefined array of characters and ...

The array X = np.array([np.nan,np.nan,"foo",np.nan,np.nan]) converts the np.nan to 'nan' i.e a string instead of keeping it as np.nan. This can really easy introduce bugs, since stuff like pd.issnull( ...