fixed memory leaks
added lpt_node_add()
fixed lpt_node_new()
added lpt_node_get_child()
fixed LptNode.add/get_child()
added the ASSERT() macro
fixed LString constructor
cleanup
added lpt_path_next_key()
added lpt_tree_get_node()
code cleanup
added lpt_proxy_connect_share()
added the LptProxy handler
added lpt_proxy_handle_message()
fixed lpt_proxy_handle_message()
fixed lpt_proxy_handle_message()
added lpt_node_get_n_children()
added lpt_node_foreach()
added the LptProxyMessage enum
debug