Add license file.

Fix move_out for cases when the moved-out node was first or last child of the old parent.

Fix const-correctness for comparison.

Add a missing 'insert(sibling_iterators, T&&)'. Fixes issue #24.

Add changelog entry.

Add missing include <string>.

Link to tree.hh file

Hyperlink fix

Link documentation

Update docs

Also fix the move constructor.

Fix bug in move assignment operator.

Use allocator_traits.

Add move_in_below

Update README