Change go dep to go mod

Merge pull request#359 from CovenantSQL/feature/adapterCQL-Proxy And CQL-ETH-Bridge

Fix sqlchain head block timestamp inaccurate bug (#355)

Merge pull request#334 from CovenantSQL/bugfix/logFix incorrect log condition

Remove bin/cql-utils in release pkg

Merge pull request#264 from CovenantSQL/feature/promote_betaPromote beta branch

Merge remote-tracking branch 'origin/develop' into beta

Merge pull request#193 from CovenantSQL/bugfix/GNTEconfigUpdate GNTE config

Merge pull request#171 from CovenantSQL/bugfix/testConfigChange test config IsTestMode to true.

Fix smux link in README