Callback output, split SDK

• Add a callback output for pull-based components without time step
• Add property is_push_based to IOutput to indicate if data must be pushed
• Handle pull-based inputs in ConnectHelper/try_connect
• Log warning when a time component was not updated during a run
• Split module sdk, as it exceeded 1000 lines of code
• Add tests

Fixes #22 (closed)

Pull-based components/outputs offer one more way to build non-working compositions. We should check for them! Continued in #49 (closed).

src/finam/core/schedule.py

@@ -170,6 +170,13 @@ class Composition(Loggable):
                     ComponentStatus.FINISHED,
                 ],
             )
+            if (
+                isinstance(mod, ITimeComponent)
+                and mod.status == ComponentStatus.VALIDATED
+            ):
+                self.logger.warning(
+                    "Time component %s was not updated during this run", mod.name
+                )
             mod.finalize()
             self._check_status(mod, [ComponentStatus.FINALIZED])