Deprecate this crate in favor of pyth-sdk-solana

This crate is no longer updated as a new crate pyth-sdk-solana is released that has identical functionalities with easier interface.

v0.5.0

• Add debug, eq, .. traits to public apis
• Add serde and borsh to fields that can take it freely + add good traits to price_conf

v0.4.0

• Adds iterator for product attributes (#14)
• Adds get price status method which checks price has not gone stale. (#16)
• Makes Ema struct fields public (#16)

v0.3.0

Adds functionality to price non-USD assets (e.g., BTC/ETH) and baskets of assets.

0.2.3-beta.0

Test github action for deploying to crates.io

v0.3.0-beta.1

Beta release of updated client version