Add support for multiple dependencies repositories
Rename disableModuleRepository (--d) to noDefaultRepositories (--no-default-repositories)
Add --cacherep option for ceylon compile
Update parameter documentation for noDefaultRepositories
Add --cwd option for ceylon compile
Support --cwd and --cacherep for ceylon compile-js
Support --cwd, --cacherep, --ignore-broken-link and --ignore-missing-doc for ceylon doc
Support --cwd and --cacherep for ceylon run
Support --cwd and --cacherep for ceylon run-js
#16 Create Outcome type
#16 Change Task to return Outcome instead of Boolean
#16 update documentation after Outcome introduction
fix typo in test
#16 remove done() / failed() functions
Improve Outcome documentation
Support --resource for ceylon compile
#20 Support multiple (or zero) tasks for Goal
#20 filter goals without task from execution after dependencies resolution
Fix build() function documentation
#20 Remove GoalGroup class

As Goal now holds a {Task*} instead of a Task, GoalGroup are redundant
with goals with dependencies but without any tasks.