Boost.Iostreams Roadmap

Possible avenues for future developments include:

1. Additional Filters and Devices
2. Filter and Device concepts permitting additional optimizations:
   1. sharing of buffers between chain elements, à la ​APR bucket brigades
   2. scatter/gather operations
3. New abstractions improving the standard library iostreams:
   1. Provide more metadata about a stream/stream buffer, e.g.,
      1. ​mode
      2. blocking/non-blocking
   2. more fine-grained stream state
   3. support for asynchronous and non-blocking I/O (see below)

4. Support for asynchronous and non-blocking I/O
   1. asio compatibility
   2. asynchronous and non-blocking device concepts
   3. abstractions for performing I/O using large collections of asynchronous/non-blocking chains [hopefully this can be implemented using asio]

5.