jest should now ignore deno-related files and tests when calculating coverage

package.json

@@ -2,6 +2,8 @@
   "jest": {
     "collectCoverageFrom": [
       "**/*.js",
+      "!**/plugins/**/cli.js",
+      "!**/__denotests__/**",
       "!**/node_modules/**",
       "!**/lib/**"
     ],