V4 renderer feature summary

[5e-Cleric]

Our renderer v4 is a ever-impending collection of features stringed together by the disruption to older documents that they represent.

The main feature is the renderer, which will mean a new version of the markdown.js file (under https://github.com/naturalcrit/homebrewery/tree/master/shared/naturalcrit) which will change the syntax used in the tool. Changes in the syntax would break all existing documents, hence, we make a new renderer and let users start their brews in any renderer they want.

What follows is a list of features that can be and probably will be implemented within the preparation or within v4's limits (v4.0.0-v5.0.0), and the related ideas of all of us coming from the previous discussion #2879, in a more organized and summarized manner.

Features that will come with v4.0.0

New syntaxes:

• Js-like one-line comments( //) (<! already exists)
• change vertical space from ::
• caption syntax
• underline syntax
• render visible horizontal rules
• table row headers
• <mark> syntax

Features that need not to come with v4, but probably will

• CM6 Update

  Update our editor CodeMirror to the latest patch

  More information in Bump CodeMirror to 6 #3511

  Would open tons of new features as described in the issue

• Unification of `edit` and `new`

  Unify the routes and components for both pages `editPage` and `newPage`

  More information in Unify base page structure - EditorPage #1800

  Would make implementing new features to those pages half the work(literally)

  Also preferred before CM6

• CSS Layers

  Implement CSS Layers to allow for users to overwrite our own css without having to worry about specificity

  Initially implemented in Try @Layers to not need .page in user style #2604, broke some things, could be implemented in v4

• Update Sharepage as brew updates

  Implemented in Experimental event stream emitter #4034

I think that is basically it.
Will upadte with all the relevant issues and PRs