Use csswring and autoprefixer via postcss

csswring supports minification and sourcemaps

gulpfile.js

@@ -1,6 +1,8 @@
 /*global $:true*/
 var $              = require('gulp-load-plugins')();
 var _              = require('lodash');
+var autoprefixer   = require('autoprefixer-core');
+var csswring       = require('csswring');
 var gulp           = require('gulp');
 var lazypipe       = require('lazypipe');
 var mainBowerFiles = require('main-bower-files');
@@ -12,6 +14,11 @@ var path = manifest.buildPaths;
 var globs = manifest.globs;
 
 var cssTasks = function(filename) {
+  var processors = [
+    autoprefixer({browsers: ['last 2 versions', 'ie 8', 'ie 9', 'android 2.3', 'android 4', 'opera 12']}),
+    csswring
+  ];
+
   return lazypipe()
     .pipe($.plumber)
     .pipe($.sourcemaps.init)
@@ -23,8 +30,8 @@ var cssTasks = function(filename) {
       .pipe(function () {
         return $.if('*.scss', $.sass());
       })
-      .pipe($.autoprefixer, 'last 2 versions', 'ie 8', 'ie 9', 'android 2.3', 'android 4', 'opera 12')
       .pipe($.concat, filename)
+    .pipe($.postcss, processors)
     .pipe($.sourcemaps.write, '.')
     .pipe(gulp.dest, path.dist + 'styles')();
 };

package.json

@@ -22,9 +22,10 @@
   },
   "devDependencies": {
     "asset-builder": "0.0.1",
+    "autoprefixer-core": "4.0.1",
+    "csswring": "^2.0.0",
     "del": "^0.1.3",
     "gulp": "^3.8.10",
-    "gulp-autoprefixer": "^2.0.0",
     "gulp-concat": "^2.3.4",
     "gulp-flatten": "0.0.4",
     "gulp-if": "^1.2.5",
@@ -34,6 +35,7 @@
     "gulp-livereload": "^2.1.0",
     "gulp-load-plugins": "^0.7.1",
     "gulp-plumber": "^0.6.3",
+    "gulp-postcss": "^3.0.0",
     "gulp-rename": "^1.2.0",
     "gulp-rev": "^2.0.1",
     "gulp-sass": "^1.1.0",