Adversary as pl.LightningModule (#103)

* Turn Adversary into LightningModule so we can fit perturbations.
* Make adversary-specific callbacks generic PL callbacks
* Improve progress bar for adversaries (#153)

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Co-authored-by: Weilin Xu <[email protected]>

Author: dxoigmn

mart/attack/__init__.py

@@ -1,12 +1,11 @@
 from .adversary import *
 from .adversary_in_art import *
 from .adversary_wrapper import *
-from .callbacks import Callback
 from .composer import *
 from .enforcer import *
 from .gain import *
 from .gradient_modifier import *
 from .initializer import *
-from .objective import Objective
+from .objective import *
 from .perturber import *
 from .projector import *