Improved some levels and added `OpenTwoDoors` level. (#32)
Improved some levels and added `OpenTwoDoors` level. (#32)

* More explicit name

* Set the room_size back to 7 (set to 6 by mistake)

* Removed `connect_all` and added 4 doors in the middle room

* Add distractors to test if the agent is able to distinguish objects.

* Removed useless `connect_all`

* Reduced the number of distractors that must be in the center room

* No need to take a random door

* Add a simpler version of TwoDoors where language understanding is not required

* Add a more complicated version of TwoDoors where memory and language understanding are required

* Use `_rand_elem`

* Room size of 6

mila-iqia/babyai