Update travis build

.travis.yml

@@ -1,5 +1,5 @@
 os: linux
-dist: xenial
+dist: trusty
 language: node_js
 node_js:
   - "10"
@@ -15,16 +15,8 @@ env:
     - CXX=clang++-5.0
     - CC=clang-5.0
 install:
-  # on node 12 opencv4nodejs and mjpeg-consumer cannot be installed
-  - if [[ `node --version` != v12* ]]; then
-      printf "while [ true ]; do\nsleep 30\necho 'Building OpenCV'\ndone" > ping.sh;
-      bash ping.sh &
-      echo $! > ping.pid;
-      npm i opencv4nodejs > /dev/null 2>&1;
-      kill `cat ping.pid`;
-
-      npm install --no-save mjpeg-consumer;
-    fi
+  - npm install --no-save opencv4nodejs;
+  - npm install --no-save mjpeg-consumer;
   - npm install
 script:
   - npm run test && npm run e2e-test

test/image-util-e2e-specs.js

@@ -18,13 +18,6 @@ async function getImage (name) {
 }
 
 describe('image-util', function () {
-  before(function () {
-    // TODO: remove when opencv4nodejs can handle v12
-    if (process.version.startsWith('v12')) {
-      return this.skip();
-    }
-  });
-
   describe('cropBase64Image', function () {
     let originalImage = null;
 

test/mjpeg-e2e-specs.js

@@ -16,11 +16,6 @@ describe('MJpeg Stream (e2e)', function () {
   let mJpegServer, stream;
 
   before(function () {
-    // TODO: remove when buffertools can handle v12
-    if (process.version.startsWith('v12')) {
-      return this.skip();
-    }
-
     mJpegServer = initMJpegServer(MJPEG_SERVER_PORT);
   });