Release PR: Orion v3.0.1 (Joystream#185)

* fix: processor's overlay bug (Joystream#170)

* atlas homepage query speed optimisation (Joystream#177)

* fix: gitignored src/model/generated

* add index on video.video_relevance field

* fix typo in developer guide docs

* regenerate db/migrations/*-Data.js file

* Fix/unblock graphql (Joystream#183)

* Make session optional and apply changes for auth handles

* Create new middleware for users and use it on some resolvers

* Remove remaining auth guards

* Small docs change

* Add middleware for channel report

* Prettier

* docs: 📝 update changelog (Joystream#184)

---------

Co-authored-by: Zeeshan Akram <37098720+zeeshanakram3@users.noreply.github.com>
Co-authored-by: WRadoslaw <92513933+WRadoslaw@users.noreply.github.com>

CHANGELOG.md

@@ -1,3 +1,8 @@
+# 3.0.1
+
+### Bug Fixes:
+Fixed: Added the locking mechanism to prevent multiple asynchronous operation from having concurrent access to Overlay (Orion processor's in-memory cache layer), which otherwise could lead to one asynchronous operation overriding the changes made (to the cache) by the other asynchronous operation. 
+
 # 3.0.0
 This is a major release that will contains several breaking changes due to the 
 introduction of the user account feature. Throught this release changelog the term