Birthday email v1.5 changes:
Added Test username to options page.
Birthday email v1.4 changes:
Now follows "Receive news and update emails" preference settings.
Birthday email v1.3 changes:
Fixed issue with Exclude user groups variable.
Birthday email v1.2 changes:
Now using finder for performing database queries.
Birthday email v1.1 changes:
Added Exclude user groups to Options page.