TODO for 0.9.6
   
   - Introduction of iterators on string and membufs.
   - Move dictionary find methods to standard sequences.
   - Expansion of the Tokenizer (with custom recognizers) and deep testing.
   - Provide Stream interface to Sockets.
   - Add version prefix to include/ install
   - [Desiderata] Submodule-loading (i.e. load core=>strings)
   - Native support for big numbers.
   - Type contracts.
   - Revision of equality concepts (== equal, === coincident).
   

