Add Hook and lifecycle logic

[facile-it]

Add Hook and lifecycle logic

[Jean85]

Nice!

[ranpafin]

Supported events are now:

• engine.before_start ( listen by SharkPrinter)
• engine.start ( nothing atm )
• engine.end ( listen by FinalPrinter)
• process.started ( nothing atm)
• process.terminated ( listen by RetryManager, ProcessOutputPrinter)

The runner lost most of his dependency and feel more clean.

[Jean85]

All done in 21c55b7 right? Good!
I think I will use process.terminated in #11

[Jean85]

Should we release this with 0.5?

[Jean85]

I had to fix the listeners priority: c26e787

[ranpafin]

Yes i can see that. Good catch!

It's a shame we had to put a priority for events... I'll look into making those methods commutative. If it is possible.

[Jean85]

The priority was the quick fix.
Maybe we can change the behaviour a little, with the printer triggered by the parser in some way (directly? with a new event?)
Also, the parser is not required if the retry is needed. Do you think it'll be a good idea to take the RetryManager and convert it to a parser? It will become the first of the chain...

[ranpafin]

Yes i think it would make sense moving it to the perser list, at the moment the retry parser feels kinda void...
We could merge those 2 and give more purpose to the current parser.

[Jean85]

Ok, I've open a new issue ( #21 ) for the refactoring, I'm closing this, it's all done for now, we can use the events as they are.