Set version to 4.0.0-rc1

Author: mlojewski-me

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [4.0.0-rc1]
 ### Added
 - New hashing algorithms: Argon2 Crypt (PHP 7.2 and above), Blowfish Crypt, Courier base64-encoded MD5, Courier base64-encoded SHA1,
   Courier base64-encoded SHA256, Courier hexadecimal MD5, Extended DES Crypt, SHA256 Crypt,
@@ -58,5 +58,5 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 - Supported version of ownCloud, Nextcloud: ownCloud 10, Nextcloud 12
 
-[Unreleased]: https://github.com/nextcloud/user_sql/compare/v3.1.0...develop
+[4.0.0-rc1]: https://github.com/nextcloud/user_sql/compare/v3.1.0...v4.0.0-rc1
 [3.1.0]: https://github.com/nextcloud/user_sql/compare/v2.4.0...v3.1.0

appinfo/info.xml

@@ -8,7 +8,7 @@
         Retrieve the users and groups info. Allow the users to change their passwords.
         Sync the users' email addresses with the addresses stored by Nextcloud.
     </description>
-    <version>4.0.0-dev</version>
+    <version>4.0.0-rc1</version>
     <licence>agpl</licence>
     <author>Andreas Böhler &lt;dev (at) aboehler (dot) at&gt;</author>
     <author>Marcin Łojewski &lt;dev@mlojewski.me&gt;</author>