Merge pull request #206 from asflierl/master

Proposing a fix for HTML resource copying
started 2.3.1-SNAPSHOT
Setting version to 2.3.1
Updated the release notes
Setting version to 2.4-SNAPSHOT
fixed the use of the ExamplesBlock trait
made some adjustments to the display of unit specs
fixed another indentation issue with examples blocks
go to greater lengths to load the resources from the correct JAR