1.5.9 released

Fix the RubyScriptWrapper and PythonScriptWrapper throwing a StringIndexOutOfBoundsException if the script do not have any extension
Fix the direct invocation of Python scripts which did not work correctly with methods not declared in the Java interface
Wrap exceptions linked to not finding the method in the invokeMethod method in a ScriptRuntimeException, and support their logging if the appropriate wrapper configuration has been specified