Upgrade to release 1.4.0:
- Improved warning messages
- Index can hold arbitrary ExtensionArrays
- Styler
- Multi-threaded CSV reading with a new CSV Engine based on
pyarrow
- Rank function for rolling and expanding windows
- Groupby positional indexing
- DataFrame.from_dict and DataFrame.to_dict have new 'tight'
option
- Fix inconsistent date string parsing
- Fix ignoring dtypes in concat with empty or all-NA columns
- Null-values are no longer coerced to NaN-value in value_counts
and mode
- mangle_dupe_cols in read_csv no longer renames unique columns
conflicting with target names
- unstack and pivot_table no longer raises ValueError for result
that would exceed int32 limit
- groupby.apply consistent transform detection
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>
