update CHANGELOG

also update the ROADMAP to document DocumentFragment xpath issues.

Author: flavorjones

CHANGELOG.md

@@ -4,6 +4,13 @@ Nokogiri follows [Semantic Versioning](https://semver.org/), please see the [REA
 
 ---
 
+## 1.11.6 / unreleased
+
+### Fixed
+
+* [CRuby] `DocumentFragment#xpath` checks for error case introduced in libxml > 2.9.10. In v1.11.4 and v1.11.5, calling `DocumentFragment#path` results in a segfault.
+
+
 ## 1.11.5 / 2021-05-19
 
 ### Fixed

ROADMAP.md

@@ -59,6 +59,7 @@
     - [#572](https://github.com/sparklemotion/nokogiri/issues/572)
   could we fix this by making DocumentFragment be a subclass of NodeSet?
 
+* potentially related, we should figure out a way that we can round-trip `DocumentFragment#path` through `#xpath` and get the `DocumentFragment back again - [#2250](https://github.com/sparklemotion/nokogiri/issues/2250)
 
 ## Better Syntax for custom XPath function handler
 

rakelib/markdown.rake

@@ -1,2 +1,2 @@
 require "hoe/markdown"
-Hoe::Markdown::Standalone.new("nokogiri").define_markdown_tasks("CHANGELOG.md", "CONTRIBUTING.md")
+Hoe::Markdown::Standalone.new("nokogiri").define_markdown_tasks("CHANGELOG.md", "CONTRIBUTING.md", "ROADMAP.md")