Cfdm

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**2019-11-27**

* New methods: `cfdm.Field.compress`, `cfdm.Field.uncompress`
* New methods: `cfdm.Data.flatten`, `cfdm.Data.uncompress`
* New ``dtype`` and ``mask`` keyword parameters to `cfdm.Data`
* Changed the default value of the ``ignore_compression`` parameter to
`True`.

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**2019-11-14**

* New method: `cfdm.Field.nc_set_global_attributes`.
* Fixed bug relating to the reading of some CDL files
(https://github.com/NCAS-CMS/cfdm/issues/5).
* Fixed bug relating numpy warning when printing a field with masked
reference time values (https://github.com/NCAS-CMS/cfdm/issues/8).

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**2019-11-07**

* Fixed bug relating to setting of parameters on datum and coordinate
conversion objects of coordinate conversion constructs
(https://github.com/NCAS-CMS/cfdm/issues/6).

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**2019-10-04**

* During writing to netCDF files, ensured that _FillValue and
missing_value have the same data type as the data.
* Fixed bug during construct equality testing that didn't recognise
equal cell method constructs in transposed, but otherwise equal
field constructs.
* Bounds netCDF dimension name is now saved, and can be set. The
saved/set value is written out to disk.
* Now reads CDL files (https://github.com/NCAS-CMS/cfdm/issues/5)

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**2019-06-13**

* Don't set the fill mode for a `netCDF4.Dataset` open for writing to
`off`, to prevent incorrect reading of some netCDF4 files
(https://github.com/NCAS-CMS/cfdm/issues/4).
* Updated documentation

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**2019-06-05**

* Added attributes `_ATOL` and `_RTOL` to facilitate subclassing.
* Fixed bug in `cfdm.Field.convert`.
* Fixed bug in `cfdm.core.constructs.new_identifier`.

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