CHANGES FROM 1.3 TO 1.4, 27 December 2010
* Window bell reporting fixed.
* Show which pane is active in the list-panes output.
* Backoff reworked.
* Prevent the server from dying when switching into copy mode when already
in a different mode.
* Reset running jobs when the status line is enabled or disabled.
* Simplify xterm modifier detection.
* Avoid crashing in copy mode if the screen size is too small for the
indicator.
* Flags -n and -p added to switch-client.
* Use UTF-8 line drawing characters on UTF-8 terminals, thus fixing some
terminals (eg putty) which disable the vt100 ACS mode switching sequences
in UTF-8 mode. On terminals without ACS, use ASCII equivalents.
* New server option exit-unattached added.
* New session option destroy-unattached added.
* Fall back on normal session choice method if $TMUX exists but is invalid
rather than rejecting.
* Mark repeating keys with "(repeat)" in the key list.
* When removing a pane, don't change the active pane unless the active pane
is actually the one being removed.
* New command last-pane added.
* AIX fixes.
* Flag -a added to unbind-key.
* Add XAUTHORITY to update-environment.
* More info regarding window and pane flags is now shown in list-*.
* If VISUAL or EDITOR contains "vi" configure mode-keys and status-key to vi.
* New window option monitor-silence and session option visual-silence added.
* In the built-in layouts distribute the panes more evenly.
* Set the default value of main-pane-width to 80 instead of 81.
* Command-line flag -V added.
* Instead of keeping a per-client prompt history make it global.
* Fix rectangle copy to behave like emacs (the cursor is not part of the
selection on the right edge but on the left it is).
* Flag -l added to switch-client.
* Retrieve environment variables from the global environment rather than
getenv(3), thus allowing them to be updated during the configuration file.
* New window options other-pane-{height,width} added.
* More minor bugs fixed and manpage improvements.
CHANGES FROM 1.2 TO 1.3, 18 July 2010
* New input parser.
* Flags to move through panes -UDLR added to select-pane.
* Commands up-pane, and down-pane removed, since equivalent behaviour is now
available through the target flag (-t:+ and -t:-).
* Jump-forward/backward in copy move (based on vi's F, and f commands).
* Make paste-buffer accept a pane as a target.
* Flag -a added to new-window to insert a window after an existing one, moving
windows up if necessary.
* Merge more mode into copy mode.
* Run job commands explicitly in the global environment (which can be modified
with setenv -g), rather than with the environmen