Breaking Change: zely@4!

I decided to develop 4.0 to reenergize zely's development.

zely(v3) has focused too much on the backend, but it failed to achieve the goal of creating the fastest backend framework.
So after 3.0 was completed, Zely was left for a few months.

Now, I'm going to develop 4.0 to rekindle my interest in developing as a side project

#Plan

see also https://github.com/zely-js/zely/issues/405

improve export-default

export default { message: 'Hello' };

As above, there is a code that exports data by default without setting a handler

This code will work just like the code below.

export default [ALL((ctx) => ctx.send({ message: 'Hello' }))];

At first glance, the code has improved readability, and it's much simpler

improve performance

The goal of creating the fastest backend framework has not been abandoned yet.
I will continue to improve the performance of zely.

support .html

Not long ago, I made a package as a side project.
I will utilize this project and update zely to make it easier to create a frontend page using the .html extension

Note: This will only work if you enable the option separately. Normally, it will just send html through sendFile.

integrating multiple packages

Currently, Zely is divided into several packages. Questions arise as to whether this division is necessary

when zely app created via npx zely-cli init and packages downloaded

createFrontendPage

createFrontendPage is a function that will be used for all the functions related to the frontend mentioned earlier