* Single use stmt
* Log request IP
* Switch cap and slice to apply per IP
* Use SOL in logs, error msgs
* Use thiserror instead of overloading io::Error
* Return memo transaction for requests that exceed per-request-cap
* Handle faucet memos in cli
* Add some docs, esp about memo transaction
* Use SOL symbol & standardize memo
Co-authored-by: Michael Vines <mvines@gmail.com>
* Differentiate faucet tx-length errors
* Populate signature in cli airdrop memo case
Co-authored-by: Michael Vines <mvines@gmail.com>
