liborigin 2.0.0

### - e -

- empty() : tree< T, tree_node_allocator >
- end() : tree< T, tree_node_allocator >, tree< T, tree_node_allocator >::iterator_base
- end_breadth_first() : tree< T, tree_node_allocator >
- end_fixed() : tree< T, tree_node_allocator >
- end_leaf() : tree< T, tree_node_allocator >
- end_post() : tree< T, tree_node_allocator >
- equal() : tree< T, tree_node_allocator >
- equal_subtree() : tree< T, tree_node_allocator >
- erase() : tree< T, tree_node_allocator >
- erase_children() : tree< T, tree_node_allocator >
- Excel() : Origin::Excel