6.0.0

• Added: compatibility with postcss v6.x

5.0.2

• Minor dependency update
  (#57)

5.0.1

• Fixed: trailing space after custom property name causes duplicate empty
  property
  (#43)

5.0.0

• Removed: compatibility with postcss v4.x
• Added: compatibility with postcss v5.x

4.1.0

• Added: plugin now returns itself in order to expose a setVariables function
  that allow you to programmatically change the variables.
  (#35)

4.0.0

• Changed: messages and exceptions are now sent using postcss message API.

3.3.0

• Added: preserve now support "computed" so only preserve resolved custom properties (see new option below)
• Added: appendVariables allows you (when preserve is trulthy) to append your variables as custom properties
• Added: strict: false allows your to avoid too many fallbacks added in your CSS.

3.2.0

• Added: JS defined variables are now resolved too (#22)

3.1.0

• Added: variables defined in JS are now automatically prefixed with --
  (0691784)

3.0.1

• Fixed: logs now have filename back (#19)