One global stack is now used instead of a per-session stack of buffers. Thus, copy-buffer was removed and buffer-limit is now a server option. The most-recently-used choice was fixed. capture-pane is allowed to capture the history. The window can be changed by using the mouse wheel over the status line. When mode-mouse is on, copy mode is automatically entered. The options mouse-resize-pane and bell-on-alert were added. A crash was fixed by resetting the last pane on {break,swap}-pane across windows. A respawn-pane command was added. Support was added for setting the xterm clipboard. The initial context on prompts is allowed to be set. Sending data to suspended or locked clients is avoided.
