exportPattern("^[[:alpha:]]+")
importFrom("compiler","cmpfun")
importFrom("stats", "frequency", "is.mts", "is.ts", "start", "ts")
importFrom("utils", "read.csv", "read.table", "write.csv","write.table","packageVersion")
importFrom("lubridate","week")
importFrom("grDevices","as.raster","devAskNewPage")
importFrom("graphics","rasterImage", "par", "plot")
importFrom("png","readPNG")
importFrom("xml2", "read_xml", "as_list")
