Removed redundant task.incoming() code.
Removed a debug print.
Fix async repeating tasks (satellite processing)

Broken recently-ish (test suite required...)
New reference test for satellite processing.
Removed two obsolete files from dev/.
Merge branch 'master' into tidy-task-incoming-message-code
Merge pull request #509 from hjoliver/tidy-task-incoming-message-code

Removed redundant task.incoming() code.