Fixed StackOverflow when adding exclusions
Added @Slf4j, changed log level to debug. Added unit test for circular dependencies
Added  @Issue(SHADOW-69) to unit test
rename a test
Add a PropertiesFileTransformer as suggested in #73

This is a verbatim copy of the class found in the Griffon build.
Please consider these files a starting point for fullfiling the
feature described in #73. The current implementation is good
enough for the uses cases found in Griffon projects, it's likely
to be broad enough to cover all cases, bu one can never tell ;-)

The license governing the shadow-gradle-plugin project has been
applied to the new files :-)
close #72 - allow configuration of servicefiletransformer path
Merge pull request #74 from aalmiray/properties_transformer

Add a PropertiesFileTransformer as suggested in #73
add properties file transformer contribution from Andres Almiray
create ShadowSpec to define DSL methods for ShadowJar task
copy the junit jar into project for testing
Merge pull request #69 from brandonkearby/master

Fixed StackOverflow when adding exclusions
mention Brandon Kearby's contribution
use junit jar in project instead of downloading from jcenter
add some specs around useing the shadowJar of a subproject in another project via the shadow configuration
close #70, #71 - apply transformers to project resources
close #61 - do not drop dep resources when using relocation
add ability to publish SNAPSHOT versions to OJO
remove id for subplugins, only support apply main plugin by id
README updates
update version for release