v3.12.0

Diff: v3.11.0 -> v3.12.0

⭐ Features

• 140a276 (#138) Add new rule vue/no-multi-spaces
• 85558dc (#60) Add new rule vue/max-attributes-per-line
• becfb8a (#137) Detect Vue.mixin as component so it's also linted

🐛 Bug fixes

• 164b2ae (#143) Fix traversing in over many types in require-valid-default-prop
• df84d9b (#146) Improve support for spread operator

⚙️ Chores

• 23d360c (#157) Rename rule no-reservered-keys to no-reserved-keys.