Updated bin scripts
Removed is_traversable()
Revert empty() usage
Revert "Removed is_traversable()"

This reverts commit 7b5ee8c308c5aa5e62e861127d2b9a21c7174105.

Conflicts:

	src/Titon/Utility/Traverse.hh
Revert "Revert "Removed is_traversable()""

This reverts commit 73f6f68282ab5eed021eefe35cdb1309fb5004f2.
Improve python scripts