v3.40.7

Bug Fixes

• testnet: move feeFallback to constants, use when network is testnet
  (0a93d782)

Features

• bch: save bch account metadata to kv store
  (e61821bd)

Chore

• release:
  • v3.40.7
    (a5288324)
  • bitcoincashjs-lib dependency
    (e84b7923)

Pull requests merged

• Merge pull request #469 from blockchain/testnet-fees
  (8fce0e59)
• Merge pull request #470 from blockchain/bch-metadata
  (f9fbcc70)