Drop non-representative ResOps releases; use USGS proxies
Addresses misalignment where reservoir releases do not represent piped-diversion plant operations.
Changes
- Add data/misc/ResOps_changes.csv
- Filter ResOpsUS release by dropping listed GRanD IDs
- Use ResOpsUSrelease_csv_filtered in get_ResOps_releases()
Closes #5 (closed)