Updated the changelog.

Author: Yorick Peterse

doc/changelog.md

@@ -3,6 +3,17 @@
 This document contains details of the various releases and their release dates.
 Dates are in the format `yyyy-mm-dd`.
 
+## 1.1.0 - 2015-02-16
+
+This release changes the way error handling is done. Instead of having multiple,
+separate error callbacks there's now only one error callback:
+`LL::Driver#parser_error`. See commit 22b6081e37509d10e3b31d6593b0a7f2e5fd7839
+for more information.
+
+While this change technically breaks backwards compatibility I do not consider
+the old error handling system part of the public API, mainly due to it being
+extremely painful to use.
+
 ## 1.0.0 - 2015-02-13
 
 The first public release of ruby-ll!