[Tests] up to node v11.7, v10.15, v8.15, v6.16

Author: ljharb

.travis.yml

@@ -2,12 +2,12 @@ language: node_js
 os:
  - linux
 node_js:
-  - "11.4"
-  - "10.14"
+  - "11.7"
+  - "10.15"
   - "9.11"
-  - "8.14"
+  - "8.15"
   - "7.10"
-  - "6.15"
+  - "6.16"
   - "5.12"
   - "4.9"
   - "iojs-v3.3"
@@ -37,6 +37,12 @@ matrix:
       env: PRETEST=true
     - node_js: "lts/*"
       env: POSTTEST=true
+    - node_js: "11.6"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "11.5"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "11.4"
+      env: TEST=true ALLOW_FAILURE=true
     - node_js: "11.3"
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "11.2"
@@ -45,6 +51,8 @@ matrix:
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "11.0"
       env: TEST=true ALLOW_FAILURE=true
+    - node_js: "10.14"
+      env: TEST=true ALLOW_FAILURE=true
     - node_js: "10.13"
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "10.12"
@@ -95,6 +103,8 @@ matrix:
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "9.0"
       env: TEST=true ALLOW_FAILURE=true
+    - node_js: "8.14"
+      env: TEST=true ALLOW_FAILURE=true
     - node_js: "8.13"
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "8.12"
@@ -143,6 +153,8 @@ matrix:
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "7.0"
       env: TEST=true ALLOW_FAILURE=true
+    - node_js: "6.15"
+      env: TEST=true ALLOW_FAILURE=true
     - node_js: "6.14"
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "6.13"