add --preserve-symlinks option from Node 6.3
update the browser version of events to 2.0.0—this version adds methods like prependListener that were introduced in recent node versions, but it is also twice the size of events v1.x (2KB instead of 1KB).
Dynamically calculate __dirname and __filename when --node is passed
upgrade module-deps, see https://github.com/browserify/module-deps/releases/tag/v6.0.0