Start Rails 6.0 development!!!

:tada::tada::tada:

3 files changed, 5 insertions, 36 deletions

diff --git a/actioncable/CHANGELOG.md b/actioncable/CHANGELOG.md
index 38bf842b14..72f5c5de35 100644
--- a/actioncable/CHANGELOG.md
+++ b/actioncable/CHANGELOG.md
@@ -1,34 +1,3 @@
-## Rails 5.2.0.beta2 (November 28, 2017) ##
 
-*   No changes.
 
-
-## Rails 5.2.0.beta1 (November 27, 2017) ##
-
-*   Removed deprecated evented redis adapter.
-
-    *Rafael Mendonça França*
-
-*   Support redis-rb 4.0.
-
-    *Jeremy Daer*
-
-*   Hash long stream identifiers when using PostgreSQL adapter.
-
-    PostgreSQL has a limit on identifiers length (63 chars, [docs](https://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS)).
-    Provided fix minifies identifiers longer than 63 chars by hashing them with SHA1.
-
-    Fixes #28751.
-
-    *Vladimir Dementyev*
-
-*   Action Cable's `redis` adapter allows for other common redis-rb options (`host`, `port`, `db`, `password`) in cable.yml.
-
-    Previously, it accepts only a [redis:// url](https://www.iana.org/assignments/uri-schemes/prov/redis) as an option.
-    While we can add all of these options to the `url` itself, it is not explicitly documented. This alternative setup
-    is shown as the first example in the [Redis rubygem](https://github.com/redis/redis-rb#getting-started), which
-    makes this set of options as sensible as using just the `url`.
-
-    *Marc Rendl Ignacio*
-
-Please check [5-1-stable](https://github.com/rails/rails/blob/5-1-stable/actioncable/CHANGELOG.md) for previous changes.
+Please check [5-2-stable](https://github.com/rails/rails/blob/5-2-stable/actioncable/CHANGELOG.md) for previous changes.
diff --git a/actioncable/lib/action_cable/gem_version.rb b/actioncable/lib/action_cable/gem_version.rb
index d72ba18acd..cd1d9bccef 100644
--- a/actioncable/lib/action_cable/gem_version.rb
+++ b/actioncable/lib/action_cable/gem_version.rb
@@ -7,10 +7,10 @@ module ActionCable
   end
 
   module VERSION
-    MAJOR = 5
-    MINOR = 2
+    MAJOR = 6
+    MINOR = 0
     TINY  = 0
-    PRE   = "beta2"
+    PRE   = "alpha"
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
   end
diff --git a/actioncable/package.json b/actioncable/package.json
index 8d7f9ff302..d9df46043d 100644
--- a/actioncable/package.json
+++ b/actioncable/package.json
@@ -1,6 +1,6 @@
 {
   "name": "actioncable",
-  "version": "5.2.0-beta2",
+  "version": "6.0.0-alpha",
   "description": "WebSocket framework for Ruby on Rails.",
   "main": "lib/assets/compiled/action_cable.js",
   "files": [