diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..0f17867
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..2f093a7
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,2 @@
+github: gajus
+patreon: gajus
diff --git a/.gitignore b/.gitignore
index d54786c..df978de 100755
--- a/.gitignore
+++ b/.gitignore
@@ -3,9 +3,10 @@ coverage
 dist
 *.log
 .*
-!.README
+!.babelrc
+!.editorconfig
+!.eslintrc
 !.gitignore
 !.npmignore
-!.babelrc
+!.README
 !.travis.yml
-!.eslintrc
diff --git a/README.md b/README.md
index d16c474..a6b7399 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # React CSS Modules
 
+[![GitSpo Mentions](https://gitspo.com/badges/mentions/gajus/react-css-modules?style=flat-square)](https://gitspo.com/mentions/gajus/react-css-modules)
 [![Travis build status](http://img.shields.io/travis/gajus/react-css-modules/master.svg?style=flat-square)](https://travis-ci.org/gajus/react-css-modules)
 [![NPM version](http://img.shields.io/npm/v/react-css-modules.svg?style=flat-square)](https://www.npmjs.org/package/react-css-modules)
 [![js-canonical-style](https://img.shields.io/badge/code%20style-canonical-blue.svg?style=flat-square)](https://github.com/gajus/canonical)
@@ -8,9 +9,7 @@
 
 React CSS Modules implement automatic mapping of CSS modules. Every CSS class is assigned a local-scoped identifier with a global unique name. CSS Modules enable a modular and reusable CSS!
 
-> ⚠️⚠️⚠️
->
-> Note:
+> ## ⚠️⚠️⚠️ DEPRECATION NOTICE ⚠️⚠️⚠️
 >
 > If you are considering to use `react-css-modules`, evaluate if [`babel-plugin-react-css-modules`](https://github.com/gajus/babel-plugin-react-css-modules) covers your use case.
 > `babel-plugin-react-css-modules` is a lightweight alternative of `react-css-modules`.
@@ -18,8 +17,7 @@ React CSS Modules implement automatic mapping of CSS modules. Every CSS class is
 > `babel-plugin-react-css-modules` is not a drop-in replacement and does not cover all the use cases of `react-css-modules`.
 > However, it has a lot smaller performance overhead (0-10% vs +50%; see [Performance](https://github.com/gajus/babel-plugin-react-css-modules#performance)) and a lot smaller size footprint (less than 2kb vs +17kb).
 >
-> It is easy to get started!
-> See the demo https://github.com/gajus/babel-plugin-react-css-modules/tree/master/demo
+> It is easy to get started! See the demo https://github.com/gajus/babel-plugin-react-css-modules/tree/master/demo
 
 - [CSS Modules](#css-modules)
     - [webpack `css-loader`](#webpack-css-loader)
diff --git a/src/extendReactClass.js b/src/extendReactClass.js
index f1f41a6..4741bea 100644
--- a/src/extendReactClass.js
+++ b/src/extendReactClass.js
@@ -19,6 +19,8 @@ export default (Component: Object, defaultStyles: Object, options: Object) => {
 
       const hasDefaultstyles = _.isObject(defaultStyles);
 
+      let renderResult;
+
       if (this.props.styles || hasDefaultstyles) {
         const props = Object.assign({}, this.props);
 
@@ -36,12 +38,29 @@ export default (Component: Object, defaultStyles: Object, options: Object) => {
           writable: false
         });
 
-        this.props = props;
+        const originalProps = this.props;
+
+        let renderIsSuccessful = false;
+
+        try {
+          this.props = props;
+
+          renderResult = super.render();
+
+          renderIsSuccessful = true;
+        } finally {
+          this.props = originalProps;
+        }
+
+        // @see https://github.com/facebook/react/issues/14224
+        if (!renderIsSuccessful) {
+          renderResult = super.render();
+        }
       } else {
         styles = {};
-      }
 
-      const renderResult = super.render();
+        renderResult = super.render();
+      }
 
       if (renderResult) {
         return linkClass(renderResult, styles, options);
diff --git a/src/linkClass.js b/src/linkClass.js
index 4618446..4ed3975 100644
--- a/src/linkClass.js
+++ b/src/linkClass.js
@@ -13,7 +13,9 @@ const linkArray = (array: Array, styles: Object, configuration: Object) => {
       // eslint-disable-next-line no-use-before-define
       array[index] = linkElement(React.Children.only(value), styles, configuration);
     } else if (_.isArray(value)) {
-      array[index] = linkArray(value, styles, configuration);
+      const unfreezedValue = Object.isFrozen(value) ? objectUnfreeze(value) : value;
+
+      array[index] = linkArray(unfreezedValue, styles, configuration);
     }
   });
 
@@ -50,14 +52,7 @@ const linkElement = (element: ReactElement, styles: Object, configuration: Objec
   if (React.isValidElement(children)) {
     elementShallowCopy.props.children = linkElement(React.Children.only(children), styles, configuration);
   } else if (_.isArray(children) || isIterable(children)) {
-    elementShallowCopy.props.children = React.Children.map(children, (node) => {
-      if (React.isValidElement(node)) {
-        // eslint-disable-next-line no-use-before-define
-        return linkElement(React.Children.only(node), styles, configuration);
-      } else {
-        return node;
-      }
-    });
+    elementShallowCopy.props.children = linkArray(objectUnfreeze(children), styles, configuration);
   }
 
   _.forEach(restProps, (propValue, propName) => {
diff --git a/tests/linkClass.js b/tests/linkClass.js
index 6a13f21..cf7c289 100644
--- a/tests/linkClass.js
+++ b/tests/linkClass.js
@@ -125,6 +125,33 @@ describe('linkClass', () => {
         expect(subject.props.children[0].props.className).to.equal('foo-1');
         expect(subject.props.children[1].props.className).to.equal('bar-1');
       });
+      it('assigns a generated className to elements inside nested arrays', () => {
+        let subject;
+
+        subject = <div>
+          {[
+            [
+              <p key='1' styleName='foo' />,
+              <p key='2' styleName='bar' />
+            ],
+            [
+              <p key='1' styleName='foo' />,
+              <p key='2' styleName='bar' />
+            ]
+          ]}
+        </div>;
+
+        subject = linkClass(subject, {
+          bar: 'bar-1',
+          foo: 'foo-1'
+        });
+
+        expect(subject.props.children[0][0].props.className).to.equal('foo-1');
+        expect(subject.props.children[0][1].props.className).to.equal('bar-1');
+
+        expect(subject.props.children[1][0].props.className).to.equal('foo-1');
+        expect(subject.props.children[1][1].props.className).to.equal('bar-1');
+      });
       it('styleName is deleted from props', () => {
         let subject;
 
@@ -141,6 +168,22 @@ describe('linkClass', () => {
         expect(subject.props.children[0].props).not.to.have.property('styleName');
         expect(subject.props.children[1].props).not.to.have.property('styleName');
       });
+      it('preserves original keys', () => {
+        let subject;
+
+        subject = <div>
+          <p key='1' styleName='foo' />
+          <p key='2' styleName='bar' />
+        </div>;
+
+        subject = linkClass(subject, {
+          bar: 'bar-1',
+          foo: 'foo-1'
+        });
+
+        expect(subject.props.children[0].key).to.equal('1');
+        expect(subject.props.children[1].key).to.equal('2');
+      });
     });
     context('when multiple descendants have styleName and are iterable', () => {
       it('assigns a generated className', () => {