MBHdesign v2.2.1 (Release date: 2022-01-25)
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Changes:

* Addition of function quasiSamp.raster for faster and less memory hungry methods for 2D raster surfaces.
* Associated changes to help file, Description, Namespace etc.

MBHdesign v2.1.9 (Release date: 2021-10-26)
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Changes:

* Changes to vignette to accommodate changes in package dependency (spsurvey).
* Changes to CITATION
* Addition of NEWS (this file).

MBHdesign v2.1.9 (Release date: 2022-October)
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Changes:

* Introduce code for cluster sampling.  In particular alterInclusionProbs.cluster and quasiSamp.cluster
