Spec Improvements

[andreaSimonePorceddu]

This is a proposal to improve the default slice interfaces in order to have a more scalable system and a more intuitive theme building.

Sizes

The xxs and xxl could become 2xs and 2xl in order to suggest a more scalable naming for all sizes props.

Font Slice

As the font slice keys could be used to define different fonts and even the same fonts with different weights and styles it could be better to leave this slice more flexible by changing regular, medium, bold to just one default property default.

Borders

primary and secondary keys seem to not work properly to define borders. We could change them with some more appropriate like thin and `bold.

Zindices

light, soft and strong keys seem to not work properly to define zIndices. We could change them with some more appropriate like `lowest, lower, low, high, higher, highest.

[mauroerta]

I agree with the new interfaces, steps needed if we want to change those interfaces are:

• update @morfeo/spec package
• update @morfeo/preset-default
• re-build the theme and update css inside the web-extension
• update the docs

Will you do it? I can help you with the update of the documentation.

[andreaSimonePorceddu]

closed with PR #110