Mitigating Issue #87 somewhat.

Issue #87 is there because, normally, specs under `spec/support` are
run when any other spec is run, and are run twice when they themselves
are run. Tagging them with `support: true` *in the outermost `describe`
block header* and running `rspec -t ~support` *will* give the number of
specs *actually run*, excluding those "support" specs (which aren't run
at all). Running `rspec -t support` will run *only those* specs —
twice. Take *that* number, divide it in half, and add it to the number
you got from the first run, and you have the true number of specs.
Pfffft.

RSpec: 904 examples, 0 failures
RuboCop: 229 files inspected, no offenses detected