* [NOD-1223] Delete unused files/packages.
* [NOD-1223] Move signal and limits to the os package.
* [NOD-1223] Put database and dbaccess into the db package.
* [NOD-1223] Fold the logs package into the logger package.
* [NOD-1223] Rename domainmessage to appmessage.
* [NOD-1223] Rename to/from DomainMessage to AppMessage.
* [NOD-1223] Move appmessage to the app packge.
* [NOD-1223] Move protocol to the app packge.
* [NOD-1223] Move the network package to the infrastructure packge.
* [NOD-1223] Rename cmd to executables.
* [NOD-1223] Fix go.doc in the logger package.
* [NOD-641] Upgrade to github.com/pkg/errors v0.9.1 and use errors.As where needed
* [NOD-641] Fix find and replace error
* [NOD-641] Use errors.As for error type checking
* [NOD-641] Fix errors.As for pointer types
* [NOD-641] Use errors.As where needed
* [NOD-641] Rename rErr->ruleErr
* [NOD-641] Rename derr->dbErr
* [NOD-641] e->flagsErr where necessary
* [NOD-641] change jerr to more appropriate name
* [NOD-641] Rename cerr->bdRuleErr
* [NOD-641] Rename serr->scriptErr
* [NOD-641] Use errors.Is instead of testutil.AreErrorsEqual in TestNewHashFromStr
* [NOD-641] Rename bdRuleErr->dagRuleErr
* [NOD-641] Rename mErr->msgErr
* [NOD-641] Rename dErr->deserializeErr
* [DEV-376] Changed any instance of %v in format strings with a more specific format token
* [DEV-376] Fixed some more wrong formatting strings + removed redundant
cast
* [DEV-376] Added fmt.Sprintf where it was missing
* [DEV-376] use %s for util.Amount, to invoke .String()
* [DEV-376] Some more fixes in format strings
* [DEV-376] fixed mruinvmap_test to expect the correct behaviour
* [DEV-97] Moved github.com/daglabs/btcutil into github.com/daglabs/btcd/btcutil.
* [DEV-97] Updated Gopkg.toml to no longer refer to btcutil.
* [DEV-97] Renamed btcutil to util.
