gimms 0.4.0 (version 'develop', 2015-12-16)
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Changes:

* Created NEWS file.
* Added multi-core support for the following functions: downloadGimms, rasterizeGimms, monthlyComposite. The related argument 'cores' defaults to 1 (i.e., parallel computing is disabled if not specified otherwise).
* Created script gimmsControls which comprises non-exported helper functions, e.g. gimms:::downloader to download single files.
* Disabled export of function createHeader and moved it to gimmsControls.
* Cleared up various function examples.
