rsinaica 1.0.0

• Use latetest version of roxygen to generate documentation

rsinaica 0.6.1

• sinaica_station_dates() and sinaica_param_data() return NULL when SINAICA is down

rsinaica 0.6.0

• Changed the web address of the sinaica server to use https

rsinaica 0.5.0

• First release
• Added functions sinaica_param_data() and sinaica_station_data() to download air quality data
• Added functions sinaica_station_dates() and sinaica_station_params() to query station metadata
• Added data.frames stations_sinaica and params_sinaica
• Added a NEWS.md file to track changes to the package.