message: feat(app): adds tzbtc to supported protocols
diff: @@ -10,6 +10,7 @@ import {
  UnsignedTransaction
  } from 'airgap-coin-lib'
  import { AeternityERC20Token } from 'airgap-coin-lib/dist/protocols/ethereum/erc20/AeToken'
  +import { TezosBTC } from 'airgap-coin-lib/dist/protocols/tezos/fa/TezosBTC'
  import { tokens } from './tokens'
  export interface Token {
  @@ -53,6 +54,7 @@ export class ProtocolsService {
  public addProtocols() {
  addSupportedProtocol(AeternityERC20Token)
  addSubProtocol('xtz', new TezosKtProtocol())
  + addSubProtocol('xtz', new TezosBTC())
  this.subProtocols.forEach(supportedSubAccount => {
  supportedSubAccount.subProtocols.forEach(subProtocol => {
  