Interactions between Lolex, Timecop and the Cache in HyperSpec

Hyperspec uses the Filecache gem, which uses Time.now. But if Timecop freezes time in a spec, then Time.now is not returning the system time, and the Filecache does not work. This should be fixable by wrapping calls to the Filecache with the timecop return method (and a block.) But this does not in general work because Hyperspec tries to communicate the "return" to the client, even if the client is not running.

The following series of patches fixes the issue, and can be incorporated into the next point release:

```ruby
module HyperSpec
module Internal
module Controller
class << self
# wrap all calls with Timecop.return so the file cache gets the true system time
def cache_read(key)
Timecop.return { file_cache.get(key) }
end

def cache_write(key, value)
Timecop.return { file_cache.set(key, value) }
end

def cache_delete(key)
Timecop.return { file_cache.delete(key) }
rescue StandardError
nil
end
end
end
end
end

class Lolex
# store all lolex updates unless hyper_spec is mounted
def self.evaluate_ruby(&block)
if @capybara_page&.instance_variable_get('@hyper_spec_mounted')
@capybara_page.internal_evaluate_ruby(yield)
else
pending_evaluations << block
end
end
end
```