nanonext 1.2.0

New Features

• Adds serial_config() to create configurations that can be set on Sockets to make use of custom serialization and unserialization functions for reference objects (plugs into the 'refhook' system of native R serialization).
• 'opt<-'() now accepts the special option 'serial' for Sockets, which takes a configuration returned from serial_config().
• Adds the 'poly' protocol for one-to-one of many socket connections (NNG's pair v1 polyamorous mode).
• Adds is_ncurl_session() as a validation function.
• Adds collect_pipe() for obtaining the underlying Pipe from a 'recvAio'. This affords more granular control of connections, with the ability to close individual pipes.
• send_aio() now accept a Pipe to direct messages to a specific peer for supported protocols such as 'poly'.

Updates

• Send mode 'next' is folded into the default 'serial', with custom serialization functions applying automatically if they have been registered.
• The session-wide next_config() is now deprecated and defunct, in favour of the new serial_config().
• ncurl_session() now returns 'errorValue' 7 (Object closed) when attempting to transact over a closed session or closing a closed session, rather than throwing an error.
• collect_aio() and collect_aio_() no longer append empty names when acting on lists of Aios where there were none in the first place.
• Removes hard dependency on stats and utils base packages.
• Requires R >= 3.6.