Merge 898a28f into 5374093

package.json

@@ -45,7 +45,7 @@
   "devDependencies": {
     "@types/sinon": "5.0.6",
     "ava": "0.25.0",
-    "concurrently": "4.0.1",
+    "concurrently": "4.1.0",
     "coveralls": "3.0.2",
     "nyc": "13.1.0",
     "publish-please": "5.2.0",

yarn.lock

@@ -1227,15 +1227,15 @@ concordance@^3.0.0:
     semver "^5.3.0"
     well-known-symbols "^1.0.0"
 
-concurrently@4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/concurrently/-/concurrently-4.0.1.tgz#f6310fbadf2f476dd95df952edb5c0ab789f672c"
+concurrently@4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/concurrently/-/concurrently-4.1.0.tgz#17fdf067da71210685d9ea554423ef239da30d33"
   dependencies:
     chalk "^2.4.1"
     date-fns "^1.23.0"
     lodash "^4.17.10"
     read-pkg "^4.0.1"
-    rxjs "6.2.2"
+    rxjs "^6.3.3"
     spawn-command "^0.0.2-1"
     supports-color "^4.5.0"
     tree-kill "^1.1.0"
@@ -3776,13 +3776,7 @@ run-async@^2.2.0:
   dependencies:
     is-promise "^2.1.0"
 
-rxjs@6.2.2:
-  version "6.2.2"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.2.2.tgz#eb75fa3c186ff5289907d06483a77884586e1cf9"
-  dependencies:
-    tslib "^1.9.0"
-
-rxjs@^6.1.0:
+rxjs@^6.1.0, rxjs@^6.3.3:
   version "6.3.3"
   resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.3.3.tgz#3c6a7fa420e844a81390fb1158a9ec614f4bad55"
   dependencies: