v0.7.6

• join performance improved
• outer join added
• LIKE predicate added

v0.7.5.3

• table printer added
• column type detection fixed
• CSV quote detection fixed

v0.7.5.2

• toList and asList added to columns
• aggregation of NA values fixed
• small bug fixes

v0.7.5.1

• csv reader performance improved
• csv reader column select fixed
• empty column append fixed

v0.7.5

• direct value access for DataRow object.

  DataRows now directly access the respective values from the columns.
  This improves runtime and memory footprint for most DataFrame operations.
  DataRow objects are invalidated once the source DataFrame is changed.
  Accessing an invalidated row results in an exception

• Row collections are now return as DataRows object.
  DataRows can be converted to a new DataFrame

• improved 'groupBy' method

v0.7.1

• interval indices added
• bugfixes

v0.7

• read and write functions have been rewritten from scratch for this version. Some existing methods have beed removed.

• column types can be detected automatically

• Data grouping has been refactored and aggregation functions can now be applied to data groupings.

• Data groupings can now be used like normal DataFrames.

• Java 8 is now required.

• Empty DataFrame instances are now created using DataFrame.create()

v0.6.1

• CSV loading, writing
• filter predicates (object and query text based)
• dataframe join (left, right, inner)
• groupBy
• sort
• column operations