* Dynamically change the `font-smoothing` pref
By default, hterm defaults to `font-smoothing: 'antialiased'`, which
works really well on retina displays. On non-retina displays, however,
the type looks very thin and is hard to read.
This will look at the devicePixelRatio of the device anytime the term
prefs are set, and change between `antialiased` and
`subpixel-antialiased` dynamically.
* Refactor to add the font smoothing override into state
This also subscribes to the electron `move` event to control when this
piece of state gets updated.
* Add UI_WINDOW_MOVE action with a side effect for font smoothing
The `$EDITOR ~/.hyperterm.js && exit` requires that the default shell recognize variables as commands and to recognize the `&&` syntax, so it does not work with fish shell. The new command works with all common shells, including fish.
