Reports which years have cached data available, including file sizes and ages.
Value
Data frame with cache information (invisibly). Columns include:
end_year: School year end
cache_type: Type of cached data (tidy or wide)
size_mb: File size in megabytes
age_days: Days since file was created/modified
Examples
if (FALSE) { # \dontrun{
cache_status()
} # }