v2.0.0

⚠️ BREAKING RELEASE ⚠️

• This release removes cssnext and instead individually bundles many of its plugins. Cssnext had become out of date and severely bugged, and at the moment isn't as well maintained as we'd like it to be. This release brings all the plugins up to date, and drops some plugins that are not widely used or on standards track.
• Removed plugins that were present in cssnext below. Note that any the removed plugins can be added back if you need them for some reason, just install and use the appendPlugins option!
  • @apply rule - no longer on standards track (plugin)
  • filter polyfill for old IE - no longer relevant for browser support (plugin)
  • initial property fallback - not useful, not a web standard (plugin)
  • rem fallback - browser support for rem is good enough, not needed (plugin)
  • overflow-wrap alias - why would anyone use this? just use word-wrap... (plugin)
  • rgba fallback to hex - browser support is good enough for rgba, not a good polyfill (plugin)
• Many new configuration options added, see readme.
• browsers, features, and warnForDuplicates options removed. browsers can be sent directly to autoprefixer options, features have been split out to their own keys, and there is no longer any warning for duplicates functionality.
• cssnano options added, if necessary