Zap receipts

Added

• Support for Zap receipts as part of NIP-57 (Jose Mateo)
• Support for serializing and deserializing events (Jose Mateo)

Zap requests, event deletion, nostr test lib.

• Add support for Zap requests as part of NIP-57
• Add support for event deletion request events.
• Release nostr-sdk-test package, which provides kotest-property Arb(itrary) builders for testing applications using nostr-sdk.

v0.0.4

Version 0.0.4 (2023-05-18)

• Add ability to filter notes by hashtag
• Add event signature validation
• Tag type, replacing raw string usage