Fix #236: fix bug in clause resizing
Merge branch 'iss_236' into develop
Fix #235: set (slf4j) logger only necessary (execution messages) and sout otherwise (or toString() )
Issue #235: distinct messaging and logging.

- create Chattebox class which is the main entry point for messaging (instead of SearchMonitorFactory).
- update doc, CHANGES and README
- some methods in SMF are now deprecated and will removed in v3.3.0
Issue #235: add logback dep for debugging purpose only, update doc, etc
Merge branch 'iss_235' into develop