Updating version (#104)

gradle.properties

@@ -1,7 +1,7 @@
 pluginGroup=uk.co.hadoopathome.intellij.viewer
 pluginName=intellij-avro-parquet-viewer
 pluginVersion=3.1.0
-changeNotes=Upgraded Java version from 8 to 11. Minimum required IntelliJ version now 2020.3. Back-end changes to use the new IntelliJ Kotlin plugin build process.
+changeNotes=Supporting Parquet and Avro files with any filename
 
 # See https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
 # for insight into build numbers and IntelliJ Platform versions.