fix test and add one for LoaderTask similar to ImageManagerTest
fix LoaderTask on failed decoding
even delete corrupted files
extract logic for image loading into BitmapRetriever, should be reused in SimpleLoader as well.
use BitmapRetriever in SimpleLoader
define CacheManager.remove and implement it, add tests
use new cachemanager API in bitmap retriever test
Increments to 1.6.1 due to cacheManager api change
Merge pull request #142 from novoda/more_tests

fix test and add one for LoaderTask similar to ImageManagerTest
add test to demonstrate that ImageManager.cacheImage() is broken
fix ImageManager.cacheImage()
Merge pull request #143 from novoda/image_manager_cache_fix

Image manager cacheImage fix
Refactors BitmapRetrieverTest.cacheImage (inc rename)
Refactors IM.cacheImage - WIP (fails)
Removes redundant (and failing test) from ImageManager.

- Removes ImageManagerTest.testCacheImage
- The behaviour it tests is covered in ImageManagerInstrumentationTest.testCacheImage
Removes unused fields
Changes test image (want to trigger build)
Adds LruBitmapCache to LoaderSettings used in testCacheImage
provide image to avoid loading via network
make test intention more clear