Some nice changes for tmux, including scrolling and clicking.

tmux.conf

# The following has been adopted from https://www.hamvocke.com/blog/a-guide-to-customizing-your-tmux-conf/

# remap prefix from 'C-b' to 'C-a'
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix

# split panes using | and -
bind | split-window -h
bind - split-window -v
unbind '"'
unbind %

# switch panes using Alt-arrow without prefix
bind -n S-Left select-pane -L
bind -n S-Right select-pane -R
bind -n S-Up select-pane -U
bind -n S-Down select-pane -D


# Enable mouse mode (tmux 2.1 and above)
set -g mouse on

# don't rename windows automatically
set-option -g allow-rename off