CHANGELOG.md in teuton-2.3.9

- old
+ new

@@ -1,8 +1,28 @@
 [<< back](../README.md)
 
 # Changelog
 
-* [version 2.4](changelog/v2.4.md)
+## TO-DO
+
+- Teuton readme --lang=es
+
+## [2.4.0]
+
+New features:
+- Add new DSL keyword: expect_last, expect_fisrt
+- New doc and example: learn-15-exit_codes
+- Remove os gem.
+- Change test output colors to green as use others test tools.
+
+Bug fixed:
+- All "expect*" keywords must require 2 arguments. The second is optional.
+
+Revise
+- Remove colors to log text
+- teuton readme: macros, getvars, expect_last, expect_first
+- Formatter: xml, csv, list, etc.
+
+
 * [version 2.2](changelog/v2.2.md)
 * [version 2.1](changelog/v2.1.md)
 * [version 2.0](changelog/v2.0.md)