* `DataFrame.read_npz`: New method to read NumPy npz format * `DataFrame.write_npz`: New method to write NumPy npz format * `*.read_*`: Decompress `.bz2|.gz|.xz` automatically * `*.write_*`: Compress `.bz2|.gz|.xz` automatically
0.25
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* `DataFrame.print_missing_counts`: Fix when nothing missing * `Vector.replace_missing`: New method
0.24
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* `DataFrame.print_memory_use`: New method * `ListOfDicts.write_csv`: Use less memory
0.23
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* `Vector.is_*`: Change to be methods instead of properties * Drop deprecated use of `np.int` * Drop deprecated comparisons against NaN