Bump up test-interface dependency to version 1.0-SNAP3.
Initial version that uses new framework API in test-interface 1.0:
-Changed usages and implementations of interfaces in org.scalatools.testing._ to use/implement interfaces/classes in sbt.testing._ instead.
-Added sbt.testing to interfaceFilter in TestFramework.createTestLoader method to enable loading of classes in sbt.testing package.
-Added FrameworkWrapper.java to wrap old framework implementations.
-Added code in ForkMain.java to serialize Selectors.
Changed ForkTests to call acceptorThread.join(), to make sure that acceptorThread is finished before Acceptor.result is called.
Made to ForkMain's write method synchronized, to ensure the output stream won't corrupt when test framework implementation uses multi-threads to write event back to sbt.
Changed createTeskTasks in TestFramework.scala to reuse TestRunner instance when running different TestDefinition.
-Changed behavior so that only a single Runner instance is used to run tests in multiple test groups.
-Added code to support remoteArgs in test-interface 1.0.
Added code to call Runner's done() method in both InProcess and SubProcess cases.
Added >1 framework class per framework support, this enables sbt to support both old and new framework API at the same time.
-Moved code that count test results from TestLogger to SuiteResult.
-Print the results in Tests.showResult.
Added support of custom summary message returned from Runner.done method.
Added code to tag test task using Array[String] returned from Task.tags method.
Added .gitattributes file.
Normalize line endings.
Added support of nested test tasks when tests are executed InProcess and sequentially.
Added support of nested test tasks when tests are executed in SubProcess.
Initial working version of makeParallel that support nested tasks.
Merge remote-tracking branch 'scalatest/new-framework-api-12' into 0.13