make sure we run properly if installed as an addOn dependency

--HG--
branch : 0.9
fixed strict error

--HG--
branch : 0.9
Backed out changeset: cbb4dcacf710

I made a mistake, the stable version of Pimple (1.0.2) still is type-hinted,
only the upcoming 1.1+ will allow anything there.

--HG--
branch : 0.9
make it easier to load addOns and stuff from custom places (good for tests in addOns)

--HG--
branch : 0.9