Improvements:
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* Python 3.7 is outdated - to use Python 3.9 (3.10) as min ver
* Handling of different 'code parameter' types (ALtype, strings, F namelist, JSON)
* Using URI to describe data entries
* To add HDC as IDS type
* To use HDC objects for passing IDSes (or their parts) between actor layers

Generated Py-F actors:
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+ extract codes common to all actors to separate 'space' (system module?)
+ improve 'runwork' mechanism

iWrap:
----------------
+ language specific panes plugin discovery mechanism based on implicit namespace packages
+ set iWrap version based on GIT

Open points:
* Should 'call_init' be a part of actor API ?
* Effective memory usage: what about a NUMBER of HUGE IDSes?
* init/step/finish in standalone mode (?)