ropensci/weathercan: weathercan v0.2.4

Now part of ropensci.org!

• sp moved to suggests, users are now prompted to install sp if they want to search stations by coordinates
• weather_dl() replaces weather()
• weather_interp() replaces add_weather()
• stations_dl() replaces stations_all()
• tz_calc() replaces get_tz()
• Internal code modifications to match best practices

• Updated stations data
• Added flags and glossary datasets as well as vignettes
• stations_search() warns user if name looks like coords
• stations_search() with coord now returns closest 10 stations
• add_weather() warns user if trying to interpolate weather from >1 station
• Updated code to conform with rOpenSci requirements
• Data downloaded from multiple timezones defaults to UTC

• weather(format = FALSE) properly returns data
• updated weather() to work with lubridate 1.7.1