Merge pull request #12908 from dotty-staging/301-rc2-blog

Add 3.0.1-RC2 blog article

Author: anatoliykmetyuk

docs/blog/_posts/2021-06-25-scala301-rc2.md

@@ -0,0 +1,50 @@
+---
+layout: blog-page
+title: Scala 3.0.1-RC2 – backports of critical bugfixes
+author: Anatolii Kmetiuk
+authorImg: /images/anatolii.png
+date: 2021-06-25
+---
+
+This post is a quick announcement of Scala 3.0.1-RC2. This is the second release candidate for 3.0.1. The reason for this release is that a regression with respect to 3.0.0 was introduced by PR [#12519](https://github.com/lampepfl/dotty/pull/12519) which caused the compiler to fail where it shouldn't. We have fixed this regression in PR [#12827](https://github.com/lampepfl/dotty/pull/12827) and backported it to 3.0.1. This is the main reason for having 3.0.1-RC2 before 3.0.1 which is due in one week.
+
+Besides this main change, taking advantage of the fact that RC2 is happening, we have also included various SBT reporting improvements (PR [#12845](https://github.com/lampepfl/dotty/pull/12845)) which should improve interaction with [Metals](https://scalameta.org/metals/). Also we've backported a few infrastructural fixes even though they aren't a regression from 3.0.0.
+
+<!--more-->
+
+# Contributors
+Thank you to all the contributors who made this release possible 🎉
+
+According to `git shortlog -sn --no-merges 3.0.1-RC1..3.0.1-RC2` these are:
+
+```
+     3  Guillaume Martres
+     2  Krzysztof Romanowski
+     1  Anatolii Kmetiuk
+     1  Markus Sutter
+     1  Martin Odersky
+     1  Vadim Chelyshov
+```
+
+## Library authors: Join our community build
+
+Scala 3 now has a set of widely-used community libraries that are built against every nightly Scala 3 snapshot.
+Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+to make sure that our regression suite includes your library.
+
+[Scastie]: https://scastie.scala-lang.org/?target=dotty
+
+[@odersky]: https://github.com/odersky
+[@DarkDimius]: https://github.com/DarkDimius
+[@smarter]: https://github.com/smarter
+[@felixmulder]: https://github.com/felixmulder
+[@nicolasstucki]: https://github.com/nicolasstucki
+[@liufengyun]: https://github.com/liufengyun
+[@OlivierBlanvillain]: https://github.com/OlivierBlanvillain
+[@biboudis]: https://github.com/biboudis
+[@allanrenucci]: https://github.com/allanrenucci
+[@Blaisorblade]: https://github.com/Blaisorblade
+[@Duhemm]: https://github.com/Duhemm
+[@AleksanderBG]: https://github.com/AleksanderBG
+[@milessabin]: https://github.com/milessabin
+[@anatoliykmetyuk]: https://github.com/anatoliykmetyuk