Drop low HTTP server implementation

In this release we drop the low HTTP server implementation from this project.
A new separated project was created instead: https://github.com/jkyberneees/low-http-server

Performance improvements

Changes:

• Performance improvements in URL query string parsing implementation.

Removing unrequired log

Changes:

• Removing un-required console.log

Cumulative improvements

Changes:

• Added "out of the box" support for request query string parsing. From now you can get a req.query params object.
• Minor performance improvements.
• Improving low server API compatibility with Node.js.

Thanks to @jesusvilla for pushing forward this improvements in #15

Supporting writable stream on response (low http server)

Changes:

• Fixes request headers processing in low server.
• Added support for writable streams for response object in low server. Thanks to https://github.com/jesusvilla for his contribution here.
• Dev dependencies were updated.

Performance improvements

Changes:

• 10 - 15% performance improvements in low server thanks to #12
• Allowing to disable internal router matching cache in sequential router

Minor performance improvement

Changes:

• Minor source code refactoring.
• Minor performance improvement on nested routers detection.
• Adding Benchmarks topic to readme.

Updating packaging

Changes:

• Removing not required files from module package.
• Updating dev dependencies.

Fixes error propagation inside nested routers

Fixed:

• Error propagation inside async handlers in nested routers

Removed:

• package-lock.json file was removed from module

Improve Node.js HTTP server compatibility in "low"

• The req.url also contains query string.
• The req.path value is now consistent across nested routers in/out