Allow for configuring the deletion of the project directory in cleanup of ProjectSpec. Also fixed a compilation issue on ClasspathAddingInitScriptBuilder.
Use file collection to assign buildscript classpath.
Merge pull request #16 from nebula-plugins/configure-project-cleanup

Allow for configuring the deletion of the project directory in cleanup of ProjectSpec
Try applying plugin to multiple subprojects.
AllowListener is not used anymore.
Fix documentation.
If a task doesn't have a trailing colon then add it.
Expose indicator of successful build in ExecutionResult.
Allow for a task to be asked if it was skipped.
Remove unused code.
Close connection after executing build with tooling API. Introduced a listener for supporting this and future functionality in a generic way.
Merge pull request #17 from nebula-plugins/additional-changes

Additional changes