- Generally fixes#68
- First attempt to externalize event execution from state machine
into its own class backed by an interface. This relates to #7
- Change of various places to have better support if execution
is done in threads.
- Not yet a central place where concurrency can be defines, thus
currently rely on global taskExecutor bean when can be overridded
from a default which is SyncTaskExecutor. Futher work for
that in separate tickets.
- Change tasks sample to use a thread pool.
- Change of concept how initial state/transition is handled, no
longer handled manually in lifecycle method, thus giving a change
for initial transition to execute its actions in a multiple threads.
