Removed es5 shim function and support for ie < 10 (#3722)

* removed es5 part
* removed json shim
* removed node 5
* removed node 5

.travis.yml

@@ -2,7 +2,6 @@ language: node_js
 node_js:
   - "7"
   - "6"
-  - "5"
   - "4"
 env:
   - CXX=g++-4.9

README.md

@@ -50,7 +50,7 @@ Fabric.js allows you to easily create simple shapes like rectangles, circles, tr
 - Encapsulated in one object
 - No browser sniffing for critical functionality
 - Runs under ES5 strict mode
-- Runs on a server under [Node.js](http://nodejs.org/) (0.8, 0.10, 0.11, 0.12) (see [Node.js limitations](https://github.com/kangax/fabric.js/wiki/Fabric-limitations-in-node.js))
+- Runs on a server under [Node.js](http://nodejs.org/) (stable releases and latest of current) (see [Node.js limitations](https://github.com/kangax/fabric.js/wiki/Fabric-limitations-in-node.js))
 - Follows [Semantic Versioning](http://semver.org/)
 
 ### Supported browsers
@@ -59,23 +59,7 @@ Fabric.js allows you to easily create simple shapes like rectangles, circles, tr
 - Safari 3+
 - Opera 9.64+
 - Chrome (all versions)
-- IE9, IE10, IE11, Edge
-
-#### With help of [Explorer Canvas](http://code.google.com/p/explorercanvas/)
-
-- IE8 (incomplete — about 17 failing tests at the moment)
-- IE7,6 (incomplete - about 27 failing tests at the moment)
-
-See [Fabric limitations in Old IE](https://github.com/kangax/fabric.js/wiki/Fabric-limitations-in-oldIE).
-
-Note: to properly make old IE work, you will need to add [html5shiv](https://github.com/aFarkas/html5shiv) as a conditional comment in your HEAD, particularly `html5shiv-printshiv.js` to allow for children elements:
-
-```
-<!--[if lt IE 9]>
-    <script src="path/to/your/html5shiv-printshiv.js"></script>
-<![endif]-->
-```
-Remember to add [Explorer Canvas](http://code.google.com/p/explorercanvas/) as well.
+- IE10, IE11, Edge
 
 You can [run automated unit tests](http://fabricjs.com/test/unit/) right in the browser.
 
@@ -194,7 +178,7 @@ Also see [official 4-part intro series](http://fabricjs.com/articles), [presenta
 These are the optional modules that could be specified for inclusion, when building custom version of fabric:
 
 - **text** — Adds support for static text (`fabric.Text`)
-- **itext** — Adds support for interactive text (`fabric.IText`)
+- **itext** — Adds support for interactive text (`fabric.IText`, `fabric.Textbox`)
 - **serialization** — Adds support for `loadFromJSON`, `loadFromDatalessJSON`, and `clone` methods on `fabric.Canvas`
 - **interaction** — Adds support for interactive features of fabric — selecting/transforming objects/groups via mouse/touch devices.
 - **parser** — Adds support for `fabric.parseSVGDocument`, `fabric.loadSVGFromURL`, and `fabric.loadSVGFromString`
@@ -211,7 +195,6 @@ Additional flags for build script are:
 - **requirejs** — Makes fabric requirejs AMD-compatible in `dist/fabric.js`. *Note:* an unminified, requirejs-compatible version is always created in `dist/fabric.require.js`
 - **no-strict** — Strips "use strict" directives from source
 - **no-svg-export** — Removes svg exporting functionality
-- **no-es5-compat** - Removes ES5 compat methods (Array.prototype.*, String.prototype.*, Function.prototype.*)
 - **sourcemap** - Generates a sourceMap file and adds the `sourceMappingURL` (only if uglifyjs is used) to `dist/fabric.min.js`
 
 For example:
@@ -255,7 +238,7 @@ For example:
 
 ### Staying in touch
 
-Follow [@fabric.js](http://twitter.com/fabricjs) or [@kangax](http://twitter.com/kangax) on twitter.
+Follow [@fabric.js](http://twitter.com/fabricjs), [@kangax](http://twitter.com/kangax) or or [@AndreaBogazzi](http://twitter.com/AndreaBogazzi) on twitter.
 
 Questions, suggestions — [fabric.js on Google Groups](http://groups.google.com/group/fabricjs).
 
@@ -273,6 +256,7 @@ Get help in Fabric's IRC channel — irc://irc.freenode.net/#fabric.js
 - [Maxim "hakunin" Chernyak](http://twitter.com/hakunin) for ideas, and help with various parts of the library throughout its life
 - [Sergey Nisnevich](http://nisnya.com) for help with geometry logic
 - [Stefan Kienzle](https://twitter.com/kienzle_s) for help with bugs, features, documentation, github issues
+- [Andrea Bogazzi](https://twitter.com/AndreaBogazzi) for help with bugs, new features, documentation, github issues
 - [And all the other GitHub contributors](https://github.com/kangax/fabric.js/graphs/contributors)
 
 ### MIT License

build.js

@@ -21,7 +21,6 @@ var mininfierCmd;
 
 var noStrict = 'no-strict' in buildArgsAsObject;
 var noSVGExport = 'no-svg-export' in buildArgsAsObject;
-var noES5Compat = 'no-es5-compat' in buildArgsAsObject;
 var requirejs = 'requirejs' in buildArgsAsObject ? 'requirejs' : false;
 var sourceMap = 'sourcemap' in buildArgsAsObject;
 
@@ -69,7 +68,6 @@ var distFileContents =
     (modulesToExclude.length ? (' exclude=' + modulesToExclude.join(',')) : '') +
     (noStrict ? ' no-strict' : '') +
     (noSVGExport ? ' no-svg-export' : '') +
-    (noES5Compat ? ' no-es5-compat' : '') +
     (requirejs ? ' requirejs' : '') +
     (sourceMap ? ' sourcemap' : '') +
     ' minifier=' + minifier +
@@ -98,9 +96,6 @@ function appendFileContents(fileNames, callback) {
       if (noSVGExport) {
         strData = strData.replace(/\/\* _TO_SVG_START_ \*\/[\s\S]*?\/\* _TO_SVG_END_ \*\//g, '');
       }
-      if (noES5Compat) {
-        strData = strData.replace(/\/\* _ES5_COMPAT_START_ \*\/[\s\S]*?\/\* _ES5_COMPAT_END_ \*\//g, '');
-      }
       if (noSVGImport) {
         strData = strData.replace(/\/\* _FROM_SVG_START_ \*\/[\s\S]*?\/\* _FROM_SVG_END_ \*\//g, '');
       }
@@ -119,16 +114,6 @@ function ifSpecifiedInclude(moduleName, fileName) {
   return ((isInIncludedList || includeAllModules) && !isInExcludedList) ? fileName : '';
 }
 
-function ifSpecifiedDependencyInclude(included, excluded, fileName) {
-  return (
-    (
-      (modulesToInclude.indexOf(included) > -1 || includeAllModules) &&
-      (modulesToExclude.indexOf(excluded) == -1))
-    ? fileName
-    : ''
-  );
-}
-
 function ifSpecifiedAMDInclude(amdLib) {
   var supportedLibraries = ['requirejs'];
   if (supportedLibraries.indexOf(amdLib) > -1) {
@@ -140,7 +125,6 @@ function ifSpecifiedAMDInclude(amdLib) {
 var filesToInclude = [
   'HEADER.js',
 
-  ifSpecifiedDependencyInclude('serialization', 'json', 'lib/json2.js'),
   ifSpecifiedInclude('gestures', 'lib/event.js'),
 
   'src/mixins/observable.mixin.js',
@@ -151,7 +135,6 @@ var filesToInclude = [
   'src/util/lang_array.js',
   'src/util/lang_object.js',
   'src/util/lang_string.js',
-  'src/util/lang_function.js',
   'src/util/lang_class.js',
   'src/util/dom_event.js',
   'src/util/dom_style.js',