+* Add a logging callback.
+ - One in a meshlink_handle_t for everything that happens after meshlink_open().
+ - Add a global one for library calls that don't involve a valid meshlink_handle_t *.
+ - Get rid of "priority".
+
+* Fill in mesh->errno whenever an error happens (= when a function returns false or NULL).
+
+* Add autoconf/automake stuff to call Doxygen.
+
+* Write a test suite for the library.
+
+* Write a manual
+ - Document API
+ - Explain what MeshLink does and how it should be used in the application
+ - Write simple examples for common operations
+ - List possible ways of synchronisation between application and library threads
+ - simple polling
+ - pthread_cond?
+ - pipe() to signal an event loop of the application's choice
+ - whatever equivalent(s) there are on Windows
+
+* Add a "channel" library to MeshLink.
+ - Support multiple TCP- and UDP-like streams between two nodes.
+
+Mostly done:
+------------
+
+* Check for remaining global variables and get rid of them.
+
+* Write code for all the functions in meshlink.c (some can be moved from libmeshlink.c)
+ Current stubs that need implementation:
+ - meshlink_export()
+ - meshlink_import()
+ - meshlink_blacklist()
+
+* Implement a simple single producer, single consumer queue for communication
+ between the application and library threads. It is possible to do this without locks.
+
+* Provide thread-safety to functions that return pointers to meshlink_node_t.
+ - The mesh->nodes tree can be updated by the library thread at any time,
+ so it must be protected by a mutex or rwlock.
+ - Individial node_t's must never be freed or moved except in meshlink_close().
+
+* Make the headers work correctly in a C++ environment.
+
+* Add a header-only C++ wrapper API.