adds snipet method in screen for an element to delete itself

Signed-off-by: Raphael Catolino <raphael.catolino@gmail.com>
element now has a screen attribute
Merge branch 'master' of https://github.com/DeepInTheLight/DeepInTheLight
bonus malus
musique
changed camera borders
merge
Merge branch 'master' of github.com:DeepInTheLight/DeepInTheLight
Adds implementation to allow for deletion of element, and update of the
relevant element lists

Signed-off-by: Raphael Catolino <raphael.catolino@gmail.com>
Merge branch 'master' of github.com:DeepInTheLight/DeepInTheLight
... and we will never speak of this again
Merge branch 'master' of https://github.com/DeepInTheLight/DeepInTheLight
Merge branch 'master' of github.com:DeepInTheLight/DeepInTheLight
stuff will be deleted correctly now
ligth bonusfish
Merge branch 'master' of github.com:DeepInTheLight/DeepInTheLight
add getBoundary methods in screen

Signed-off-by: Raphael Catolino <raphael.catolino@gmail.com>
bonus fish should now check whether he gets out before moving
touches zqsdaw
Merge branch 'master' of github.com:DeepInTheLight/DeepInTheLight