DOC: changelog

CHANGELOG.rst

@@ -10,8 +10,10 @@ Added
 ^^^^^
 
 
-* New :func:`.util.countRows` function to count the rows (lines) of a file;
+* New :func:`.util.wc` function to count the rows (lines) of a file;
   this is simply a wrapper around the UNIX ``wc`` tool.
+* New :func:`.util.cat` function to concatenate multiple files together;
+  this is simply a wrapper around the UNIX ``cat`` tool.
 * New :meth:`.DataTable.subtable` and :meth:`.DataTable.merge` methods, to aid
   in passing data to/from worker processes.
 * Processing functions can now be specified to run independently on a subset
@@ -23,9 +25,11 @@ Changed
 
 
 * FUNPACK will now parallelise tasks by default; previously it would only
-  parallelise tasks if ``--low_memory`` mode were selected. Data import, cleaning
-  functions, processing functions, and the ``removeIfRedundant`` process all
-  parallelise their work.
+  parallelise tasks if ``--low_memory`` mode were selected. Data import,
+  cleaning functions, processing functions, the ``removeIfRedundant`` process,
+  and TSV exporting all parallelise their work. New columns created by processing
+  functions are saved to disk, and re-loaded by the main process, rather than
+  being passed back to the main process via inter-process communication.
 * The ``--variable``, ``--subject`` and ``--exclude`` options now accept
   comma-separated mixtures of IDs and MATLAB-style ranges.