* The collapse method can now be parallelised by running any cf-python script with mpirun if mpi4py is installed. This is an experimental feature and is not recommended for operational use. None of the parallel code is executed when a script is run in serial.
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2.2.8
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**2018-08-28**
* Bug fix: better handle subspacing by multiple multidimensional items
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2.2.7
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**2018-07-25**
* Bug fix: correctly set units of bounds when the `cf.Data` object inserted with insert_bounds has units of ''. In this case the bounds of the parent coordinate are now inherited.
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2.2.6
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**2018-07-24**
* Improved error messages * Changed behaviour when printing reference times with a calendar of ``'none'`` - no longer attempts a to create a date-time representation
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2.2.5
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**2018-07-02**
* Fixed bug with HDF chunk sizes that prevented the writing of large files
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2.2.4
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**2018-06-29**
* Interim fix for with HDF chunk sizes that prevented the writing of large files