0.6.7

Note: v0.6.6 was accidentally diverged from the master branch and
published independently, so this commit "jumps" from v0.6.5 to v0.6.7.
This simplified history shows the shape of the DAG:

    * 0bdd4de 0.6.7 (32 seconds ago) <Greg Hurrell>
    * a82041d Handle null stdout/stderr in pretty.js (24 hours ago) <Greg Hurrell>
    * 44caf9d Add prettier (28 hours ago) <Greg Hurrell>
    * 3f5e646 Silence no-multiple-spaces lint (29 hours ago) <Greg Hurrell>
    | * 168b720 (tag: v0.6.6) 0.6.6 (3 weeks ago) <Hyohyeon Jeong>
    |/
    * 0a375ae (tag: v0.6.5) 0.6.5 (3 weeks ago) <Hyohyeon Jeong>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "codemirror-graphql",
-  "version": "0.6.5",
+  "version": "0.6.7",
   "description": "GraphQL mode and helpers for CodeMirror.",
   "contributors": [
     "Hyohyeon Jeong <[email protected]>",