Cf-python

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**2016-04-27**

* Added --reference_datetime option to ``cfa``
* Bug fix to `cf.Field.collapse` when providing `cf.Query` objects via
the group parameter
* Added auto regridding method, which is now the default


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**2016-03-03**

* Bug fix in `cf.Field.where` when using `cf.masked`
* conda installation (with thanks to Andy Heaps)
* Bug fix for type casting in `cf.Field.collapse`
* Display long_name if it exists and there is no standard_name
* Fix for compiling the UM C code on certain OSs (with thanks to Simon Wilson)
* Fixed incorrect assignment of cyclicity in `cf.Field.regrids`
* Nearest neighbour regridding in `cf.Field.regrids`

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**2016-02-09**

* Bug fix to `cf.Field.autocyclic`
* Bug fix to `cf.Field.clip` - now works when limit units are supplied
* New methods: `cf.Data.round`, `cf.Field.Round`
* Added ``lbtim`` as a `cf.Field` property when reading UM files
* Fixed coordinate creation for UM atmosphere_hybrid_height_coordinate
* Bug fix to handling of cyclic fields by `cf.Field.regrids`
* Added nearest neighbour field regridding
* Changed keyword ignore_dst_mask in `cf.Field.regrids` to
use_dst_mask, which is false by default

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**2015-12-10**

* Bug fixes to `cf.Field.collapse` when the "group" parameter is used
* Correct setting of cyclic axes on regridded fields
* Updates to STASH_to_CF.txt table: 3209, 3210

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**2015-12-01**

* Updates to STASH_to_CF.txt table
* Fixed bug in decoding UM version in `cf.um.read.read`
* Fixed bug in `cf.units.Utime.num2date`
* Fixed go-slow behaviour for silly BZX, BDX in PP and fields file
lookup headers

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**2015-11-05**

* Fixed bug in decoding UM version in `cf.read`

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