v0.0.2

Using rust_decimal::Decimal instead of Strings where applicable. Bug fixes, cleanup, more enum usage, and other changes
from using downstream and finding what drove poor patterns, etc.

• Decimal conversions instead of String (settled on this due to abundance/annoyance of Decimal::try_from(&someString)?
• Made KrakenClient.set_user_agent async (not required but allows Tokio mutex proxying downstream)
• Changed vol and vol_exec to volume and volume_executed in all places
• Added String data to several variants of ClientError where additional information is helpful downstream
• Added From<...> impls for StringCSV, OrderFlags, and IntOrString
  • These reduce things like StringCSV::new(vec!["someTxId".to_string()]) to "someTxId".into()
• Added example of querying an order to /examples
• Updated dependencies, including h2 for a security advisory, though it doesn't affect how it's used here
• Add err(Debug) tracing to all CoreKrakenClient methods
• Add ret tracing to any small responses and all trading endpoints in CoreKrakenClient
• Add Clone to WSS un/subscribe message types
• Add Debug, Clone, Copy to KrakenWSSClient
• Add pub to additional fields on structs in private and public WSS messages
• Change OpenOrder WSS type to use OrderStatus enum
• Used TriggerType enum in additional places

v0.0.1

Initial version with complete API (excluding NFTs)