[Changelog] Add entry for external source podspecs being evaluated in the source…

[Changelog] Add entry for external source podspecs being evaluated in the source directory and stored as JSON

CHANGELOG.md

@@ -58,6 +58,12 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
   [Samuel Giddins](https://github.com/segiddins)
   [#1919](https://github.com/CocoaPods/CocoaPods/issues/1919)
 
+* Fix the reading of podspecs that come from the `:git`, `:svn`, ':http', or
+  `:hg` options in your `Podfile` that used context-dependent ruby code, such as
+  reading a file to determine the specification version.  
+  [Samuel Giddins](https://github.com/segiddins)
+  [#2875](https://github.com/CocoaPods/CocoaPods/issues/2875)
+
 ## 0.35.0
 
 [CocoaPods](https://github.com/CocoaPods/CocoaPods/compare/0.34.4...0.35.0)