Version 2.4.0

Most significant changes:

• Python bindings
• Integration with travis-ci: https://travis-ci.org/01org/parameter-framework/
• Single domain import/export (as opposed to monolithic import/export)
• Add a bash completion script for remote-process
• Fix crash at end-of-life (properly unload plugins)
• New adaptation class: Logarithmic adaptation

And various bug fixes and improvements.