fix: Fix examples and dragan epoch checkpoint (#106)

* fix examples and dragan train checkpoint

* gan_example fix

🚀

Author: jfsantos-ds

examples/regular/cgan_example.py

@@ -19,7 +19,7 @@
 
 #Before training the GAN do not forget to apply the required data transformations
 #To ease here we've applied a PowerTransformation
-data = transformations(data)
+_, data, _ = transformations(data)
 
 #For the purpose of this example we will only synthesize the minority class
 train_data = data.loc[ data['Class']==1 ].copy()