Add changes to the changelog file.

Adds changes to changelog file.

Bugfixes on issue #14

Bugfixes on issue #7

Bugfixes on invalid variable name.

Update copyright year and cleanups.

Add offline support and bugfixes.

- Bugfixes
- Add executable for offline support via Node.JS
- Restructure common and browser specific files
- Update dependencies
- Restructure user and devel dependencies
- Adjust test cases
- Add DOM treewalker polyfill
- Adjust documentation

Sanitize submit text.

- Add all issue supporting files for future tests.

Bugfixes.

- Support edge case where the node's parent is not immediate parentNode.
- Add contributing section into readme file.
- Adjust changelog file
- Bump up version to 1.2.4

Bugfixes, add Opera support, and adjust unit tests.