Fixing problematic shortening of 'horizontal cylinder'
Getting `TestEngine` working
Deleting `CompilerTests`

Bye-bye tests that serve no purpose at this point in Tortoise's life
cycle, that test something that doesn't really need to be tested at this
level to begin with, and that currently only to slow down real progress.
Bye-bye!
Bringing in `Random` for easy use in browsers and other JS engines

And also for having it work non-coincidentally on Rhino
Fixing when patch variable updates are triggered

This was a major source of errors across test suites.  I think the
majority of tests that were still failing were failing because of this.
Overall, it's because IntelliJ's Vim emulator doesn't know how to preserve
indentation across copying and pasting, even though the proper "copy"
and "paste" functionalities do it correctly.  Thanks, plugin author!
Fixing `Topology.inRadius` back to how it used to work

The cause of this was a double-double error that I made whilst slightly
reworking the class a bit.
Updating model dumps

'nightly.sh' now passes again