R5's JAR file is aprox. 45 MB and so it cannot be included inside the r5r package due to CRAN's policies, which limit package size to 5MB. The alternative we've be using so far is to store all R5's JAR files in our data server at Ipea.
Problem:The positive aspects of using this server is that it is limitless, it's free and really simple to use/update with new versions. The downside, is that Ipea's server is not super stable. The server went offline for maintenance or other problems a few times in the past year. This is more frequent than we would like to.
Alternatives:We have two alternatives.
There are a number of data storage websites/services. I list some of them below, even though I haven't looked into their terms yet.
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