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kotlinlang

Hi. On Canary 4.2 Alpha 07 I have an annoying error:
```Failed to resolve: org.jetbrains.kotlin:kotlin-stdlib:1.4-M3```
I don't have any usage of 1.4-M3 in my gradle files. My kotlin version in project level gradle file is 1.3.70.
This is almost a new project and I haven't made many changes.

I updated compose and Kotlin version to those and now I can't see the preview of my widgets

Previews appear to be broken in alpha 7 <https://kotlinlang.slack.com/archives/CJLTWPH7S/p1595516337213000>

Actually the Compose team seems to have done a huge refactoring of packages. So, the problem seems to be in package names and artifact names used in gradle. I managed to fix the issue on Studio-4.2-alpha07 by following the guides on Compose release notes.