This is the first of two changes to make the protocol more resilient and less
sensitive to other changes in the code, particularly with commands. The client
now packs argv into a buffer and sends it to the server for parsing, rather
than doing it itself and sending the parsed command data.
As a side-effect this also removes a lot of now-unused command marshalling
code.
Mixing a server without this change and a client with or vice versa will cause
tmux to hang or crash, please ensure that tmux is entirely killed before
upgrading.
status line (bound to "i" and displays the current window and time by
default). The same substitutions are applied as for status-left/right.
- Add support for including the window index (#I), pane index (#P) and window
name (#W) in the message, and status-left or status-right.
- Bump protocol version.
From Tiago Cunha, thanks!
