* use xterm for tmux light config

+ shell history for different tty terminals (restoring bash history for different tmux windows)

.bashrc

@@ -20,6 +20,7 @@ test -r /etc/bashrc && . /etc/bashrc
 test -r ~/.shell-env && . ~/.shell-env
 test -r ~/.shell-aliases && . ~/.shell-aliases
 test -r ~/.shell-common && . ~/.shell-common
+test -r ~/.shell-history && . ~/.shell-history
 
 # don't put duplicate lines in the history. See bash(1) for more options
 # ... or force ignoredups and ignorespace