Added minification of CSS build

.prettierignore

@@ -0,0 +1 @@
+**

Gruntfile.js

@@ -3,9 +3,9 @@ const sass = require('node-sass'), tildeImporter = require('grunt-sass-tilde-imp
 module.exports = function (grunt) {
     grunt.initConfig({
         pkg: grunt.file.readJSON('package.json'),
-        banner: '/*@preserve\n' +
+        banner: '/*!@preserve\n' +
         ' * Tempus Dominus Bootstrap4 v<%= pkg.version %> (<%= pkg.homepage %>)\n' +
-        ' * Copyright 2016-<%= grunt.template.today("yyyy") %> <%= pkg.author %>\n' +
+        ' * Copyright 2016-<%= grunt.template.today("yyyy") %> <%= pkg.author %> and contributors\n' +
         ' * Licensed under MIT (https://github.com/tempusdominus/bootstrap-3/blob/master/LICENSE)\n' +
         ' */\n',
         jqueryCheck: 'if (typeof jQuery === \'undefined\') {\n' +
@@ -36,10 +36,10 @@ module.exports = function (grunt) {
                     dead_code: false // eslint-disable-line
                 },
                 output: {
-                    ascii_only: true // eslint-disable-line
+                    ascii_only: true, // eslint-disable-line
+                    comments: 'some'
                 },
-                report: 'min',
-                preserveComments: 'some'
+                report: 'min'
             }
         },
         eslint: {
@@ -63,7 +63,7 @@ module.exports = function (grunt) {
                     compact: false,
                     'presets': [
                         [
-                            'es2015',
+                            '@babel/preset-env',
                             {
                                 'modules': false,
                                 'loose': true
@@ -148,11 +148,44 @@ module.exports = function (grunt) {
                     clean: true
                 }
             }
+        },
+        postcss: {
+          options: {
+              map: false,
+              processors: [
+                  require('autoprefixer')({
+                      // grid: true
+                  })
+              ]
+          },
+          dist: {
+              src: 'build/css/<%= pkg.name %>.css'
+          }
+        },
+        cssmin: {
+            options: {
+                specialComments: 'all'
+            },
+            target: {
+                files: [{
+                    expand: true,
+                    cwd: 'build/css',
+                    src: ['*.css', '!*.min.css'],
+                    dest: 'build/css',
+                    ext: '.min.css'
+                }]
+            }
         }
     });
 
     grunt.loadTasks('tasks');
     grunt.loadNpmTasks('grunt-mkdocs');
+    grunt.loadNpmTasks('grunt-node-sass');
+    grunt.loadNpmTasks('grunt-contrib-sass');
+    grunt.loadNpmTasks('grunt-postcss')
+    grunt.loadNpmTasks('grunt-contrib-cssmin')
+    grunt.loadNpmTasks('grunt-contrib-uglify')
+    grunt.loadNpmTasks('grunt-contrib-watch')
 
     require('load-grunt-tasks')(grunt);
     grunt.registerTask('default', 'build:js');
@@ -165,7 +198,7 @@ module.exports = function (grunt) {
     // Task to be run when building
     grunt.registerTask('build:js', ['babel:dev', 'concat', 'eslint', 'babel:dist', 'stamp:bootstrap', 'uglify', 'copy']);
 
-    grunt.registerTask('build:style', ['sass', 'stamp:css', 'copy']);
+    grunt.registerTask('build:style', ['sass', 'stamp:css', 'postcss', 'cssmin', 'copy']);
 
     grunt.registerTask('copy', 'Generate docs', function () {
         grunt.file.copy('build/js/tempusdominus-bootstrap-4.js', 'src/docs/theme/js/tempusdominus-bootstrap-4.js');

build/css/tempusdominus-bootstrap-4.css

@@ -1,6 +1,6 @@
-/*@preserve
+/*!@preserve
  * Tempus Dominus Bootstrap4 v5.1.2 (https://tempusdominus.github.io/bootstrap-4/)
- * Copyright 2016-2018 Jonathan Peterson
+ * Copyright 2016-2020 Jonathan Peterson and contributors
  * Licensed under MIT (https://github.com/tempusdominus/bootstrap-3/blob/master/LICENSE)
  */