Dynamic Event Registration

[da-h]

Dynamic Event Registration

This PR enables any event to itself append to existing events or even overwriting existing events.

To accomplish this, this PR does the following:

• mf (the same object as is used during register(mf) to the list of possible arguments that are automatically determined and passed to an event upon execution
• mf.overwrite_event to redefine previous definitions completely
• mf.register_event clears the cache of the event-object automatically
• adds a simple test case for event registration during an event

[sbrodehl]

Here is my feedback:

• Is the mf variable automatically added as an argument like state and event?
• How can one unregister an event?

[da-h]

• correct mf is an optional, automatically passed argument as state and event
• is un-registration a desired feature? if so, it would be easy to make the api public. The function is already present in this PR.

[sbrodehl]

I think un-registration might come in handy.

[da-h]

I think un-registration might come in handy.

Done.