Add battery drain visualization

The more the battery runs out, the foggier the image becomes.

Tune used-RAM measurements

With this release they are mostly identical to the values displayed
by the Activity Monitor.

Add debug menu item to Dock App

It shows detected system load, with CPU count and memory metrics.

Except for that this release makes the Touch Bar app upgradable by
just launching the new Touch Bar installer. Before this change you
had to explicitly remove the previous one to be able to install
the upgraded one.

On the development side, this release comes with support for
Xcode 11.3 and an upgrade to Swift 5. The README info in the
osx/ folder has been moved into one README.md.

Make a .dmg installer

To simplify for people when they want to install Bubblemon we now have a .dmg
installer.

One of the steps to get around Apple's App Translocation / Gatekeeper Path
Randomization includes having the user copying files from one location to
another.

With this release, making that copy becomes part of the installation, enabling
us to shorten the installation instructions.

* Dock: Don't fail after reboot

* Dock: Do launch Activity Monitor on click
* TouchBar: Bigger view by removing border

This release was done to handle the problems introduced with
App Translocation / Gatekeeper Path Randomization.

What happened was that since we were run from a randomized path
every time, the path encoded in the Dock's settings became invalid
after each reboot.

With this release we tell users to move us before running, which
removes the quarantine bits and lets us run like before.

More info:
http://lapcatsoftware.com/articles/app-translocation.html

Add a Touch Bar version

Starting with this release the release zip file now contains two Bubblemons,
one bubbling in the Dock like before, and one bubbling in your Touch Bar if you
have one.

Behind the scenes, this release is now (almost) entirely done in Swift.

Fix running Bubblemon detection

Drop unneeded dependencies

It builds and runs fine even without these, drop them.

Count space used by the compressor as used

This takes the RAM measurements much closer to the actual amount of physical
RAM in the system.

Add an icon