iTerm2 is a popular terminal emulator for OSX (https://www.iterm2.com).
The plugin currently implements one function, iterm2_profile, which
allows easily changing the currently selected user settings profile,
without creating a new tab or window, just by calling the function.
For example, this is handy for switching from a dark to a light colored
profile without having to re-open anything.
In addition, it also works within tmux running inside iTerm2.