support for total difficulty (needed to support some eth endpoints)

pkg/datastore/postgres/repositories/checked_headers_repository_test.go

@@ -17,6 +17,8 @@
 package repositories_test
 
 import (
+	"math/rand"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 	"github.com/vulcanize/vulcanizedb/pkg/core"
@@ -25,7 +27,6 @@ import (
 	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres/repositories"
 	"github.com/vulcanize/vulcanizedb/pkg/fakes"
 	"github.com/vulcanize/vulcanizedb/test_config"
-	"math/rand"
 )
 
 var _ = Describe("Checked Headers repository", func() {

pkg/datastore/postgres/repositories/full_sync_log_repository.go

@@ -18,6 +18,7 @@ package repositories
 
 import (
 	"database/sql"
+
 	"github.com/sirupsen/logrus"
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"