WIP: Chunking fix

This MR adds variable trigger_pattern to scan parameters, fixing #144 (closed). More fixes:

• Correct scan_param_id handling
• Fix for an undocumented bug where the last chunk was not analyzed correctly - Fix type checking for config dicts, to allow also ordered and custom ConfigDict
• Add TDC status to online_monitor interpreter
• Cleanup of doc-strings as preparation for automatic API documentation (sorry..)

TODO:

• New fixtures / fix tests for trigger_pattern
• Remove trigger pattern, since already cherry picked to !288 (merged)