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# Version 0.7.2 (March 16, 2012)

This release targets bugs in 0.7.1, and adds a few minor features.

## New features

> - Add additional tie-breaking methods in DataFrame.rank (GH 874)

> - Add ascending parameter to rank in Series, DataFrame (GH 875)

> - Add coerce_float option to DataFrame.from_records (GH 893)

> - Add sort_columns parameter to allow unsorted plots (GH 918)

> - Enable column access via attributes on GroupBy (GH 882)

> - Can pass dict of values to DataFrame.fillna (GH 661)

> - Can select multiple hierarchical groups by passing list of values in .ix (GH 134)

> - Add `axis` option to DataFrame.fillna (GH 174)

> - Add level keyword to `drop` for dropping values from a level (GH 159)

## Performance improvements

> - Use khash for Series.value_counts, add raw function to algorithms.py (GH 861)

> - Intercept __builtin__.sum in groupby (GH 885)

## Contributors

A total of 12 people contributed patches to this release. People with a “+” by their names contributed a patch for the first time.

- Adam Klein

- Benjamin Gross +

- Dan Birken +

- Dieter Vandenbussche

- Josh +

- Thomas Kluyver

- Travis N. Vaught +

- Wes McKinney

- Wouter Overmeire

- claudiobertoldi +

- elpres +

- joshuaar +