Update to 1.6.0 after changes suggested by Ben.
changed type of sdkversion to int

-avoids parsing to int
-removes deprecated warning in newer Android SDK Versions
Merge pull request #140 from Dornathal/develop

Replace Build.VERSION.SDK with Build.VERSION.SDK_INT
Merge branch 'develop' into TG-559-update-to-1.6.0

Conflicts:
	acceptance/pom.xml
	core/pom.xml
	core/src/main/java/com/novoda/imageloader/core/model/ImageTagFactory.java
	demo/pom.xml
	pom.xml
Merge pull request #139 from novoda/TG-559-update-to-1.6.0

Update to 1.6.0 after changes suggested by Ben.
Revert target (jenkins still on 18 whoops)
Merge branch 'develop' of github.com:novoda/ImageLoader into develop
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)