Filter empty groups out in AliasGroupList constructor
Filter empty groups out in AliasGroupList::setGroup
AliasGroup implements Comparable
Remove duplicate aliases in AliasGroup
Make AliasGroup Countable
Filter out empty aliases in AliasGroup
Trim aliases in AliasGroup
Merge pull request #47 from wmde/noempty

Improvements to AliasGroup and AliasGroupList