[Tests] up to node v8.4; use nvm install-latest-npm so newer np…

…m doesn’t break older node

.travis.yml

@@ -3,7 +3,7 @@ dist: precise
 os:
  - linux
 node_js:
-  - "8.2"
+  - "8.4"
   - "7.10"
   - "6.11"
   - "5.12"
@@ -16,10 +16,9 @@ node_js:
   - "0.8"
   - "0.6"
 before_install:
-  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ]; then npm install -g npm@1.3 ; elif [ "${TRAVIS_NODE_VERSION}" != "0.9" ]; then case "$(npm --version)" in 1.*) npm install -g npm@1.4.28 ;; 2.*) npm install -g npm@2 ;; esac ; fi'
-  - 'if [ "${TRAVIS_NODE_VERSION}" != "0.4" ] && [ "${TRAVIS_NODE_VERSION}" != "0.6" ] && [ "${TRAVIS_NODE_VERSION}" != "0.9" ]; then if [ "${TRAVIS_NODE_VERSION%${TRAVIS_NODE_VERSION#[0-9]}}" = "0" ] || [ "${TRAVIS_NODE_VERSION:0:4}" = "iojs" ]; then npm install -g npm@4.5 ; else npm install -g npm; fi; fi'
+  - 'nvm install-latest-npm'
 install:
-  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ]; then nvm install 0.8 && npm install -g npm@1.3 && npm install -g npm@1.4.28 && npm install -g npm@2 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install; fi;'
+  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ] || [ "${TRAVIS_NODE_VERSION}" = "0.9" ]; then nvm install --latest-npm 0.8 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install; fi;'
 script:
   - 'if [ -n "${PRETEST-}" ]; then npm run pretest ; fi'
   - 'if [ -n "${POSTTEST-}" ]; then npm run posttest ; fi'
@@ -35,6 +34,10 @@ matrix:
       env: PRETEST=true
     - node_js: "4"
       env: COVERAGE=true
+    - node_js: "8.3"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "8.2"
+      env: TEST=true ALLOW_FAILURE=true
     - node_js: "8.1"
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "8.0"
@@ -159,30 +162,6 @@ matrix:
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "0.4"
       env: TEST=true ALLOW_FAILURE=true
-    ##- node_js: "7"
-      #env: TEST=true
-      #os: osx
-    #- node_js: "6"
-      #env: TEST=true
-      #os: osx
-    #- node_js: "5"
-      #env: TEST=true
-      #os: osx
-    #- node_js: "4"
-      #env: TEST=true
-      #os: osx
-    #- node_js: "iojs"
-      #env: TEST=true
-      #os: osx
-    #- node_js: "0.12"
-      #env: TEST=true
-      #os: osx
-    #- node_js: "0.10"
-      #env: TEST=true
-      #os: osx
-    #- node_js: "0.8"
-      #env: TEST=true
-      #os: osx
   allow_failures:
     - os: osx
     - env: TEST=true ALLOW_FAILURE=true