Signer+Delegate support

v0.7

Cargo version fix

v0.6 Signer support

Keystr can act as a Signer, and sign event for a client.

• Enter a nostrconnect URI string
• Keystr will connect to the relay and listen for signer requests
• For incoming Signing requests it shows a popup for the user, to review and acknowledge (sign) it

v0.5, Key management & Delegation

Key management & Delegation functionalities, round features.

v0.2 Key import, save/load, delegation

First release; Keystr can:

• Import keys, save/load them (encrypted)
• Create NIP-26 delegation tag