Docs refresh

docs/api-output.md

@@ -29,6 +29,7 @@ A Promises/A+ promise is returned when `callback` is not provided.
 -   `callback` **[Function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function)?** called on completion with two arguments `(err, info)`.
     `info` contains the output image `format`, `size` (bytes), `width`, `height`,
     `channels` and `premultiplied` (indicating if premultiplication was used).
+    When using a crop strategy also contains `cropOffsetLeft` and `cropOffsetTop`.
 
 
 -   Throws **[Error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error)** Invalid parameters
@@ -102,8 +103,8 @@ Use these PNG options for output image.
 
 -   `options` **[Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)?** 
     -   `options.progressive` **[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)** use progressive (interlace) scan (optional, default `false`)
-    -   `options.compressionLevel` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** zlib compression level (optional, default `6`)
-    -   `options.adaptiveFiltering` **[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)** use adaptive row filtering (optional, default `true`)
+    -   `options.compressionLevel` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** zlib compression level, 0-9 (optional, default `9`)
+    -   `options.adaptiveFiltering` **[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)** use adaptive row filtering (optional, default `false`)
     -   `options.force` **[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)** force PNG output, otherwise attempt to use input format (optional, default `true`)
 
 

docs/index.md

@@ -55,9 +55,9 @@ without having to use separate command line tools like
 [jpegoptim](https://github.com/tjko/jpegoptim) and
 [jpegtran](http://jpegclub.org/jpegtran/).
 
-PNG filtering can be disabled,
+PNG filtering is disabled by default,
 which for diagrams and line art often produces the same result
-as [pngcrush](http://pmt.sourceforge.net/pngcrush/).
+as [pngcrush](https://pmt.sourceforge.io/pngcrush/).
 
 ### Contributing
 

docs/install.md

@@ -16,7 +16,7 @@ yarn add sharp
 
 ### Linux
 
-[![Ubuntu 14.04 Build Status](https://travis-ci.org/lovell/sharp.png?branch=master)](https://travis-ci.org/lovell/sharp)
+[![Ubuntu 16.04 Build Status](https://travis-ci.org/lovell/sharp.png?branch=master)](https://travis-ci.org/lovell/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/vendor` during `npm install`.
@@ -25,13 +25,13 @@ This involves an automated HTTPS download of approximately 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, 16.04
+* Ubuntu 14.04, 16.04
 * Centos 7
 * Fedora
 * openSUSE 13.2
 * Archlinux
 * Raspbian Jessie
-* Amazon Linux 2016.03, 2016.09
+* Amazon Linux 2017.03.1
 * Solus
 
 To use a globally-installed version of libvips instead of the provided binaries,
@@ -78,7 +78,7 @@ that it can be located using `pkg-config --modversion vips-cpp`.
 [![Windows x64 Build Status](https://ci.appveyor.com/api/projects/status/pgtul704nkhhg6sg)](https://ci.appveyor.com/project/lovell/sharp)
 
 libvips and its dependencies are fetched and stored within `node_modules\sharp\vendor` during `npm install`.
-This involves an automated HTTPS download of approximately 11MB.
+This involves an automated HTTPS download of approximately 12MB.
 
 Only 64-bit (x64) `node.exe` is supported.