Added

• New adapters:
  • linkpool to get ICE futures quotes
  • onchain to get ICE futures quotes

Fixed

• Local in-memory cache got broken in the last release, and was reinitialized on every request.
• amberdata adapter wasn't responding for some assets because they don't make cross-rates by default. Cross-rates are now included which enables this adapter to support markets like BNB/USD, not just the actual BNB/USDT.