wmata_api()does not retry on 401, 404, etc. The purpose of this change is to primarily retry on 429 errors when too many requests have been made on a rate-limited subscription. Waiting should successfully retry.
httr::RETRY()to deal with issues like rate limit. (#8)
POSIXctwith UTC time zone.
hmscolumns with values past midnight. (#6)
parking_*()functions until a data frames can be made.
rail_path()helper function. Keep only endpoint functions.