Add release history entry for version 3.5.0

org.eventb.texteditor.feature/feature.xml

@@ -10,6 +10,7 @@
       A text editor for the Rodin platform to edit Event-B models
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 Release History:
+3.5.0 - Compatibility with EventB-EMF 7.0.0 - fixes CamilleX dependency conflict. Fixed OOM error when top-level end keyword is missing.
 3.4.1 - Internal updates to the build process - no visible changes.
 3.4.0 - Release for Rodin 3.5 and related dependencies
 3.3.0 - Compatibility with core 3.3