Add support for Node 10, drop support for Node 9

.travis.yml

@@ -16,7 +16,7 @@ matrix:
     - os: linux
       dist: trusty
       sudo: false
-      node_js: "9"
+      node_js: "10"
     - os: osx
       osx_image: xcode8.3
       node_js: "4"
@@ -28,7 +28,7 @@ matrix:
       node_js: "8"
     - os: osx
       osx_image: xcode8.3
-      node_js: "9"
+      node_js: "10"
 after_success:
   - npm install coveralls
   - cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js

README.md

@@ -22,7 +22,7 @@ As well as image resizing, operations such as
 rotation, extraction, compositing and gamma correction are available.
 
 Most modern 64-bit OS X, Windows and Linux (glibc) systems running
-Node versions 4, 6, 8 and 9
+Node versions 4, 6, 8 and 10
 do not require any additional install or runtime dependencies.
 
 ## Examples

appveyor.yml

@@ -7,10 +7,10 @@ environment:
   - nodejs_version: "4"
   - nodejs_version: "6"
   - nodejs_version: "8"
-  - nodejs_version: "9"
+  - nodejs_version: "10"
 install:
   - ps: Install-Product node $env:nodejs_version x64
-  - npm install -g npm@5.3.x
+  - npm install -g npm@5
   - npm install
 test_script:
   - npm test

docs/index.md

@@ -14,7 +14,7 @@ As well as image resizing, operations such as
 rotation, extraction, compositing and gamma correction are available.
 
 Most 64-bit OS X, Windows and Linux (glibc) systems running
-Node versions 4, 6, 8 and 9
+Node versions 4, 6, 8 and 10
 do not require any additional install or runtime dependencies.
 
 [![Test Coverage](https://coveralls.io/repos/lovell/sharp/badge.png?branch=master)](https://coveralls.io/r/lovell/sharp?branch=master)