landscapetools 0.5.0

new interface for util_classify
- now takes argument n to specify number of classes
- style

landscapetools 0.4.0

minor bug fixes
util_facetplot now better handles lists of raster
improved theme_facetplot
util_classify can now reclassify based on real landscapes, the classification then overwrites the weightings with the proportions from this landscape
util_classify now has an mask argument, that allows for the classification only outside this mask