Merge pull request #3968 from ipfs/deps/iptb-1.2.0

update to iptb with better errors

package.json

@@ -47,9 +47,9 @@
       "version": "0.1.1"
     },
     {
-      "hash": "QmUA1aACeXdawsoHqutU4ozwrYGduFSQEz6n1hqXuE9i8k",
+      "hash": "QmSmKZTvFyWiPxu96rwKaEVSydbpSE1knuR42mCKwnLXAx",
       "name": "iptb",
-      "version": "1.1.10"
+      "version": "1.2.0"
     },
     {
       "hash": "QmVGtdTZdTFaLsaj2RwdVG8jcjNNcp1DE914DKZ2kHmXHw",