This is an internal function which retrieves the user database file
'user_db.csv', which holds user information for users with SVN
credentials. this assumes 'rsync' is available on your path, which
is true by default for linux and OSX machines, but probably not for
windows.
Usage
user_db()
Arguments
Value
the result is a data.frame of the data
Details
The information is cached so calling this function repeatably will
result in the same information being returned. Use
memoise::forget(user_db) to reset the cache if needed.