Add net-http-persistent dependency
Move caching setting into config
Revamp configuration
Add Cache and Helpers util tools
Update Gemfile.lock
Update caching value for YARD server
Update Varnish cache invalidation helper
Allow HTTP requests to Varnish host
Handle invalidating /
Delete directory and .html file using disk cache invalidation
Use Cache invalidation in remote gem update script
Fix parsing of featured configuration data
Clean up .gitignore
Fix whitelist host
Don't cache empty bodies
Fix empty content length caching
Use ETag Rack middleware
Update checks for empty body middleware
Add Last-Modified header
Add Last-Modified after