Cashu Nutshell v0.14.1: Stateless Mint

Cashu Nutshell is a Chaumian Ecash wallet and mint for Bitcoin Lightning. Cashu Nutshell is the reference implementation in Python.

What's new

Stateless Mint: Nutshell mint can now be run "stateless" meaning that all state is in the database. This is a step towards being able to run multiple mints workers in parallel for heavy load scenarios.
Max balance for mints: a new MINT_MAX_BALANCE environment flag makes sure that the mint can only hold a maximum amount.
CLI: Create an invoice without blocking with cashu invoice <amount> -n

Mint: Add LndRest and regtest tests by @callebtc in #359
Add CoreLightningRestWallet by @callebtc in #362
Upadte to c-lightning-REST v0.10.5 by @callebtc in #364
Fix: Cast keyset keys (amount) to int by @callebtc in #368
Mint: add max balance setting by @callebtc in #369
index on db and read spent proofs from db by @callebtc in #370
docker mint listen on 0.0.0.0 by @callebtc in #371
add test private key by @callebtc in #372
Test/mint_add_verification_balance by @callebtc in #373
Mint: invalidate and generate promises in single db transaction for split by @callebtc in #374
mint: fix postgres migrations by @callebtc in #375
Wallet/fix_nostr_timeout by @callebtc in #376
Mint/verify_outputs_not_already_signed by @callebtc in #377
Mint: verify outputs first during mint by @callebtc in #379
fix missing dleq proof in db by @callebtc in #380