lukeed/polka v0.4.0 on GitHub

Minor Changes

Add new opts.server option: 276056c, e93ae66, d2f5f96
This allows Polka to attach to predefined, existing servers. It's an alternative approach to booting Polka and wrapping it with another parent server.
Initialize server only when needed: 276056c
Without this, all sub-applications were preemptively booting up http servers. This meant that all servers were just utilizing memory & never served a purpose, since only the main application's server mattered.
This change means that the following code sample no longer works:
```
let { server } = polka();
//=> before: "server" was http.Server
//=> current: "server" is undefined
```
Rename req.pathname to req.path (#29): 7d467f3
This is for Express compatibility. A lot of popular apps/middlewares rely on req.path (like webpack-dev-server) & it doesn't make to maintain req.pathname and req.path values.

Push root-based middleware group into global middleware: 46285f9
This is mostly a Express-compatibility thing; funky but a needed workaround for some.