Update travis to the latest DMD / DUB release
dub.json; dub.json EVERYWHERE
Fixed bench-http-request compilation and break it at 5k iteration to allow travis to test it
Now req.query and req.form use DictionaryList instead of AAs
Use unpriviledged port for example echoserver
Get ride of a deprecation warning
Added the examples to the CI. Added binaries to gitignore.