fix: backport cid version fix to 0.30.x

Author: achingbrain

src/builder/builder.js

@@ -26,6 +26,7 @@ const defaultOptions = {
 
 module.exports = function builder (createChunker, ipld, createReducer, _options) {
   const options = extend({}, defaultOptions, _options)
+  options.cidVersion = options.cidVersion || 0
 
   return function (source) {
     return function (items, cb) {

src/importer/index.js

@@ -25,6 +25,7 @@ const defaultOptions = {
 
 module.exports = function (ipld, _options) {
   const options = Object.assign({}, defaultOptions, _options)
+  options.cidVersion = options.cidVersion || 0
 
   if (options.cidVersion > 0 && _options.rawLeaves === undefined) {
     // if the cid version is 1 or above, use raw leaves as this is