also moved it from middlewares to handlers directory
reasoning is that this class is better suited to handle routes directly
instead of being a global middleware
since IO stat to check if request path matches a physical file in the
disk every single time is not very performant
custom pages may now override any built-in pages on the fly as lolisafe
is running
also added internal persistent cache feature into NunjucksRenderer
front-end pages will now be persistently cached during production
this adds new production dependency rate-limiter-flexible
this deprecates old rateLimits option in config
to use the new rate limiters, the new option is named rateLimiters and
rateLimitersWhitelist
please consult config.sample.js
rate limiters will also be now processed before any other middlewares,
as only makes sense
