bump version to 0.16.3 (cashubtc#669)

bump version

Mint: LNbitsWallet add extra check for payment state (cashubtc#601)

* add extra check for payment state

* improve error handling

* fix response

* add failure

Refactor conditions and fix HTLC multisig (cashubtc#643)

* refactor conditions and fix htlc multisig

* restore db/write.py

* safer check for P2PK secrets for SIG_ALL

* comment cleanup

Fix: ledger requires deprecated `paid` flags in db + wallet disable b…

…ase64 keysets by default (cashubtc#634)

* wallet: deprecate base64 keysets by default

* readd deprecated paid to melt quotes as well

* readd paid flag removed in cashubtc#622 before

Remove unused coinselection (cashubtc#597)

Remove unused coinselection (cashubtc#597)

Edit README.md (cashubtc#590)

NUT-06: Mint contact info (cashubtc#585)

* Implement NUT-06 change: cashubtc/nuts#117

* wallet deserialize

* ignore contact info for deprecated v0 response

Update startup.py, check blink key (cashubtc#516)

Missing blink key here-added:

for key, value in settings.dict().items():
    if key in [
        "mint_private_key",
        "mint_seed_decryption_key",
        "nostr_private_key",
        "mint_lnbits_key",
        "mint_blink_key",