Release 3.2.0

[jkotan]

In the v3.2.0 release

• core sub-section removed from documentation (#233)
• checks if filter is installed added (#231)
• a filter tag added (#229)
• xml from nxsdesigner readable by xml builder (#227)
• string and char arguments added to Path constructor (#226)
• string and char arguments added to get_object (#224)

[jkotan]

The debian and ubuntu packages are in the HDRI/NIMS repository.