[Nexus] v3.3 of NeXus definitions released

[Pete Jemian]

The NIAC is pleased to announce release of v3.3 of the NeXus standard.

There are many changes and some additions in this new release, including 
contributions from the NIAC 2016 meeting and code camp.

* NXreflections is now a base class
* NXcanSAS is now an application definition
* NXdata is no longer a required subgroup of NXentry (although this use 
should be exceptional)
* NXDL: units allowed to be specified as one of a list of different 
types (such as angle *or* position)
* Each commit to GitHub now checked by continuous integration process 
(travis-ci)

See the release notes for a more complete list of changes:
https://github.com/nexusformat/definitions/wiki/releasenotes__v3.3

documentation:
http://download.nexusformat.org/doc/html/user_manual.html

A milestone for v3.4 has been set (tentatively) for January 2018.

Regards,
    Pete

-- 
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Pete R. Jemian, Ph.D.                <jemian at anl.gov>
Beam line Controls and Data Acquisition, Group Leader
Advanced Photon Source,   Argonne National Laboratory
Argonne, IL  60439                   630 - 252 - 3189
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    Education is the one thing for which people
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