Add noContentBase option,
Expose app.use as Server.use.
Log proxy errors instead of throwing exception

If the upstream server is for some reason unavailable (for example,
if it's being restarted/reloaded due to code changes) then
`webpack-dev-server` should log the error and not crash the running
process.
Serve proxy error messages to the browser
more pretty logging
send hash to runtime
1.5.0
Allow contentBase to be false, remove noContentBase option.
Merge branch 'refs/pull/*/he/47' of https://github.com/webpack/webpack-dev-server.git
updated deps
use new stats flag cachedAssets
1.6.0