MouseTrap binds should be removed if the element is removed.
Fetch binds only when they are initialized or updated;
$parse dependency is not required anymore.
Merge pull request #4 from AdirAmsalem/element-destroy-fix

MouseTrap binds should be removed if the element is removed.
A fix to the previous commit.
Merge pull request #5 from AdirAmsalem/element-destroy-fix

A fix to MouseTrap binds should be removed if the element is removed.