del_early_prov() searches the download folder for duplicated PRISM data and keeps only the newest version.get_prism_station_md() extracts metadata from daily PRISM data.get_prism_dailys () gains a check parameter that allows the user to specify how prism files are checked.get_prism_monthlys() can now download 1981 data. (@sdtaylor #59, #63)get_prism_annual() can now download pre 1981 data by itself. (@rabutler #64)get_prism_dailys() now correctly sets the progress bar.gen_dates() so that get_prism_dailys() works with only the dates parameter specified. (@rabutler #66)gen_dates() function for determining the specified dates (either from minDate and maxDate. or dates) used by the get_prism_*() functions.gen_dates() .Changed aquisition method to use prism webservice. Prior to this change the FTP aquisition method often caused the server to time out when download request volume became too high.
Changed method of metadata extraction. Originally we parsed XML metadata to get inforamtion about raster files. However the XML for historical data is particularly sparse. The new method relies on parsing file names instead. While more universal, it may be less stable
Fixed FTP time out error by switching to webservice
Fixed prism_stack by adjusting to new metadata extraction method