chore: 16.5.0 changelog [ci skip]

Author: yyx990803

Diff for: CHANGELOG.md

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+# [16.5.0](https://github.com/vuejs/vue-loader/compare/v16.4.1...v16.5.0) (2021-08-07)
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+* Custom Elements mode behavior changed: now only inlines the CSS and no longer exports the custom element constructor (exports the component as in normal mode). Users now need to explicitly call `defineCustomElement` on the component. This allows the custom element to be defined using an async version of the source component.
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+## [16.4.1](https://github.com/vuejs/vue-loader/compare/v16.4.0...v16.4.1) (2021-08-02)
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+### Bug Fixes
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+* fix webpack 5.48 compatibility ([b94289c](https://github.com/vuejs/vue-loader/commit/b94289c9fb395556100ec121529dfe676280d3cd)), closes [#1859](https://github.com/vuejs/vue-loader/issues/1859)
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 ## [16.4.1](https://github.com/vuejs/vue-loader/compare/v16.3.3...v16.4.1) (2021-08-02)