Upgrade to libvips v8.3.1

Remove packaging tests and therefore support for Centos 6

docs/changelog.md

@@ -2,23 +2,25 @@
 
 ### v0.15 - "*outfit*"
 
-* Take advantage of libvips 8.3 features.
-  Add support for libvips' new native loaders, including GIF and SVG.
+Requires libvips v8.3.1
+
+#### v0.15.0 - TBD
+
+* Take advantage of libvips v8.3 features.
+  Add support for libvips' new GIF and SVG loaders.
   Pre-built binaries now include giflib and librsvg, exclude *magick.
   Use shrink-on-load for WebP input.
   Break existing sharpen API to accept sigma and improve precision.
   [#369](https://github.com/lovell/sharp/issues/369)
 
-### v0.14 - "*needle*"
-
-Requires libvips v8.2.3
-
-#### v0.14.2 - TBD
-
 * Remove unnecessary (un)premultiply operations when not resizing/compositing.
   [#413](https://github.com/lovell/sharp/issues/413)
   [@jardakotesovec](https://github.com/jardakotesovec)
 
+### v0.14 - "*needle*"
+
+Requires libvips v8.2.3
+
 #### v0.14.1 - 16<sup>th</sup> April 2016
 
 * Allow removal of limitation on input pixel count via limitInputPixels. Use with care.

docs/install.md

@@ -15,14 +15,14 @@ npm install sharp
 [![Linux Build Status](https://circleci.com/gh/lovell/sharp.svg?style=svg&circle-token=6cb6d1d287a51af83722b19ed8885377fbc85e5c)](https://circleci.com/gh/lovell/sharp)
 
 libvips and its dependencies are fetched and stored within `node_modules/sharp/lib` during `npm install`.
-This involves an automated HTTPS download of approximately 7MB.
+This involves an automated HTTPS download of approximately 6.7MB.
 
 Most recent Linux-based operating systems with glibc running on x64 and ARMv6+ CPUs should "just work", e.g.:
 
 * Debian 7, 8
-* Ubuntu 12.04, 14.04, 15.04, 15.10, 16.04
+* Ubuntu 12.04, 14.04, 15.10, 16.04
 * Centos 7
-* Fedora 21, 22, 23
+* Fedora 22, 23
 * openSUSE 13.2
 * Archlinux 2015.06.01
 * Raspbian Jessie