HF RL Explorer

ENH date range yearly frequency flag 'A' is confusing, 'Y' should be accepted

ENH date range yearly frequency flag 'A' is confusing, 'Y' should be accepted: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). hour - hourly - H day - daily - D week - weekly - W year - yearly - Y

The task

hour -> hourly -> H day -> daily -> D week -> weekly -> W year -> yearly -> Y

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.