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build/node_modules/postcss-discard-unused/CHANGELOG.md

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+# 2.2.3
+
+* Font lookup is now case-insensitive, preventing unwanted removal of fonts
+  that are used (thanks to @thomas-mcdonald).
+
+# 2.2.2
+
+* Removed a dependency on `flatten`.
+* Performance tweaks; now performs a single AST pass instead of four.
+
+# 2.2.1
+
+* Now compiled with Babel 6.
+
+# 2.2.0
+
+* Added a new option to remove `@namespace` rules (thanks to @plesiecki).
+
+# 2.1.0
+
+* Added options to customise what the module discards (thanks to @TrySound).
+
+# 2.0.0
+
+* Upgraded to PostCSS 5.
+
+# 1.0.3
+
+* Improved performance by reducing the amount of AST iterations.
+* Converted the codebase to ES6.
+
+# 1.0.2
+
+* Fixes an integration issue where the module would crash on `undefined`
+  `rule.nodes`.
+
+# 1.0.1
+
+* Fixes an issue where multiple animations were not being recognized.
+
+# 1.0.0
+
+* Initial release.