[CONTRACT UPGRADE] ref-exchange v1.4.4

ref-exchange CONTRACT is about to upgrade to version 1.4.4

This regular accumulated improvement upgrade, mainly includes:

  • PR#73 from PembRock Finance to add return value when adding/removing liquidity.
  • PR#75 Modification based on JITA code audition recommendation.
  • PR#66 Guardians can collect protocol fee to owner wallet.

See detail on ReleaseNote.