Release 0.3.0

• chore: add vue-cli-5 example (84e16f2)
• chore: upgrade @windicss/plugin-utils@0.11.2 (bc74b0d)
• Merge pull request #13 from mohatt/fix-unawaited-promise (224478c)
• fix: Promise returned from compiler.$windyCSSService.init() shouldn't be thrown it away (a529e87)

Thanks
@mohatt