v5 breaking changes

[bartveneman]

This comment will be updated whenever more breaking changes are discovered/suggested

• Drop support for Node 8 and 10 (Node.js releases)
• Rename all metrics ending on .share to .ratio
• Rename stylesheets to stylesheet
• Remove stylesheets.browserhacks
• Remove stylesheets.cohesion (now rules.selectors.mean)
• Remove atrules.documents
• Remove atrules.mediaqueries.browserhacks
• Add atrules.keyframes.prefixed
• Drop atrules.namespace.*
• Drop atrules.page.*
• Drop atrules.supports.browserhacks.*
• Remove stylesheets.simplicity(now `rules.selectors)
• Add rules.selectors.mean/median/mode/etc
• Add rules.declarations.mea/median/mode
• Remove selectors.js.*
• Add selectors.specificity.*
• Add selectors.complexity.*
• Remove selectors.browserhacks.*
• Remove values.total
• Remove values.browserhacks.*
• Remove values.colors.duplicate.*

[bartveneman]

• rename atrules.imports to atrules.import
• rename atrules.mediaqueries to atrules.media

Or perhaps all metric names should be singular 🤔

[bartveneman]

Added:

• Remove selector identifiers metrics (replaced with selector complexity, see Add selector cyclomatic complexity reporting #137)

[bartveneman]

Dropped Node 8 in 395524d

[bartveneman]

Added

• Replace cohesion with rules.declarations.average, rules.declarations.min, rules.declarations.max, etc.

[bartveneman]

Started a full rewrite in the v4 branch.

Todo
Use csstree's property function https://github.com/csstree/csstree/blob/master/docs/utils.md#propertyname
Use toPlainObject for cleaner loops https://github.com/csstree/csstree/blob/master/docs/utils.md#toplainobjectastSplit into parse/normalize, analyze and aggregate layers.