aopdata

**Major changes**

• Data files are now downloaded with {httr2}. If a file can't be downloaded from the Ipea server, that file is downloaded from the GitHub mirror, so a single unavailable file or server no longer makes the whole request fail. When several files are downloaded at once, the progress bar counts files; when only one file is downloaded, it shows the amount of data downloaded.
• aopdata now requires R >= 4.1.0 (a requirement of {httr2}).

**Bug fixes**

• HTTP errors (e.g. 404 pages) are no longer saved and read as data.
• Interrupted or corrupted downloads are no longer reused from the session cache: files are saved only once they are complete, and a cached file that can't be read is removed.
• Downloads that stall are now stopped instead of hanging the R session.
• The metadata file is now downloaded with the same downloader as the data files (GitHub release first, Ipea server as fallback), and cached only once it has been read successfully. A broken cached metadata file is downloaded again instead of making every later call in the session fail.
• Grids (geometry = TRUE or read_grid()) of several cities now have a bounding box that covers all the cities, and are a plain sf data frame. Previously the bounding box covered only the first city, so maps of several cities could be cropped.
• When a download fails, the user now sees one message that says what failed. Previously the functions could print "No internet connection." up to three times, even when only one file was unavailable.

**Minor changes**

• Documentation corrected to match the data: the years and cities of each transport mode, the off-peak window, time thresholds, the TMI indicators, the defaults of read_population(year) and read_grid(showProgress), and return types.