fix(QBMigrationManager): make logMigration method public

There are circumstances where this method may need to be accessed via the migration service, itself, or by retrieving the manager through the service.

Author: jclausen

models/QBMigrationManager.cfc

@@ -92,7 +92,7 @@ component accessors="true" {
      * @direction  Whether to log it as up or down
      * @componentName The component name to log
      */
-    private void function logMigration( direction, componentName ) {
+    public void function logMigration( direction, componentName ) {
         if ( direction == "up" ) {
             queryExecute(
                 "INSERT INTO #getMigrationsTable()# VALUES ( :name, :time )",