CHANGELOG.md in negroku-2.8.3 vs CHANGELOG.md in negroku-2.8.4

@@ -2,12 +2,23 @@
 
 Reverse Chronological Order:
 
 ## Unreleased
 
-https://github.com/platanus/negroku/compare/v2.8.3...HEAD
+https://github.com/platanus/negroku/compare/v2.8.4...HEAD
 
+## `2.8.4`
+
+https://github.com/platanus/negroku/compare/v2.8.3...v2.8.4
+
+FEAT:
+- Processes start in a one by one, with a grace time of 20 seconds by default.
+  You can use the `eye_chain_grace` variable to change it.
+
+FIX:
+- Rails log now use the rails environment to read the log from the server
+
 ## `2.8.3`
 
 https://github.com/platanus/negroku/compare/v2.8.2...v2.8.3
 
 FIX:
@@ -22,10 +33,10 @@
 
 ## `2.8.2`
 
 https://github.com/platanus/negroku/compare/v2.8.1...v2.8.2
 
-FIX: 
+FIX:
 - Dependency on activesupport. Now it works on rails 4.x
 
 ## `2.8.1`
 
 https://github.com/platanus/negroku/compare/v2.8.0...v2.8.1