## What does the pull request do?
<!--- Give a bit of background on the PR here, together with links to with related issues etc. -->


## What is the current behavior?
<!--- If the PR is a fix, describe the current incorrect behavior, otherwise delete this section. -->


## What is the updated/expected behavior with this PR?
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## How was the solution implemented (if it's not obvious)?
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## Checklist

- [ ] Added unit tests (if possible)?
- [ ] Added XML documentation to any related classes?
- [ ] Consider submitting a PR to https://github.com/AvaloniaUI/Documentation with user documentation

## Breaking changes
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## Obsoletions / Deprecations
<!--- Obsolete and Deprecated attributes on APIs MUST only be included when discussed with Core team. @grokys, @kekekeks & @danwalmsley -->

## Fixed issues
<!--- If the pull request fixes issue(s) list them like this: 
Fixes #123
Fixes #456
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