v0.25.0rc0

This is a major release from 0.24.2 and includes a number of API changes, new
features, enhancements, and performance improvements along with a large number
of bug fixes.

Highlights include

• Dropped Python 2 support
• Groupby aggregation with relabeling
• Better repr for MultiIndex
• Better truncated repr for Series and DataFrame

See the release notes for a full list of all the change from 0.24.2.

The release candidate can be installed with conda using the conda-forge channel

conda install -c conda-forge/label/rc pandas=0.25.0rc0

Or via PyPI

python3 -m pip install --upgrade --pre pandas

Please report any issues with the release candidate on the pandas issue tracker.