Add CUBirds200 dataset, remove datasets from travis tests. (#175)

* Add _notravis for dataset tests.

* Move optim.transforms to optim.

* Add CU Birds200 dataset.

* Fix linting.

* Also move FGVC Aircraft test.

Author: seba-1511

CHANGELOG.md

@@ -10,8 +10,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+* `l2l.vision.datasets.CUBirds200`.
+
 ### Changed
 
+* Optimization transforms can be accessed directly through `l2l.optim`, e.g. `l2l.optim.KroneckerTransform`.
+* All vision models adhere to the `.features` and `.classifier` interface.
+
 ### Fixed
 
 

learn2learn/optim/__init__.py

@@ -7,4 +7,4 @@
 from .parameter_update import ParameterUpdate
 from .learnable_optimizer import LearnableOptimizer
 from .update_rules import *
-from . import transforms
+from .transforms import *

learn2learn/vision/datasets/__init__.py

@@ -14,3 +14,4 @@
 from .fc100 import FC100
 from .vgg_flowers import VGGFlower102
 from .fgvc_aircraft import FGVCAircraft
+from .cu_birds200 import CUBirds200