Add constructors which allow for configuration of cache location and size
Fixed formatting
Merge pull request #74 from ouya/Configurable-OKHttpLoader

[Isolated] Add constructors which allow for configuration of cache location and size
Fixed enabling Debug Indicators
Merge pull request #81 from ChristianBecker/patch-1

Fixed enabling Debug Indicators
Allow null values for non-resource image paths.
Version updates.
Merge pull request #85 from square/jw/nullin-aint-easy

Allow null values for non-resource image paths.
Prepare for 1.1.0.
[maven-release-plugin] prepare release picasso-parent-1.1.0
[maven-release-plugin] prepare for next development iteration
Properly support no images for Targets and synchronous calls.
Merge pull request #86 from square/jw/nullin

Properly support no images for Targets and synchronous calls.
Cancel existing target requests when null image.
Merge pull request #87 from square/jw/nullin

Cancel existing target requests when null image.
Prepare 1.1.1.
[maven-release-plugin] prepare release picasso-parent-1.1.1
[maven-release-plugin] prepare for next development iteration
Missing contact should return null immediately.

Closes #91.
Use a ReferenceQueue to cancel gc'ed requests.