FIX: Fixed translation of barrier
ENH: ca::all_processes introduces and examples updated
FIX: Fixed problem with trailing spaces in arc expressions
ENH: receive send events on debt

For now, the missed events are thrown away and forgotten.
Send/Receive are not visualized yet. In the fugure, send/receive events
have to be recovered, include the time correction of received tokens.
ENH: The error message about mismatched receives is printed into Kaira console
ENH: project is checked only during build process.very annoying behavior fixed