Cleaning
Handle DOMNode and DOMCrawler in Element's filter method. (Fix #36)

There is a BC break in symfony/dom-crawler 2.3.0 :
https://github.com/symfony/DomCrawler/blame/09f0cd5980511ee77c2e8142405ccd5c867506b9/CHANGELOG.md#L8
Revert the isEmpty change
Merge pull request #37 from jubianchi/issues/36

BC Break in symfony/dom-crawler 2.3.0
Add an abstraction above DOM crawler and native DOMnodes
Use the new node abstraction in the Element asserter
Merge pull request #39 from jubianchi/master

Proper fix for SF 2.3 DOM crawler BC break
Respects coding standards of Symfony, it must have blank line between code and return of function
Atoum can be launched in debug mode
Add patch method
Rename "$put" variable in"$patch"
Merge branch 'master' of https://github.com/Heer0/AtoumBundle