Updated: GetAccounts
Added option to return group information about all accounts
New Functions: AddSource, AddCategory2
You now have the ability to add Sources and Category2s via the API
UPDATE: More New Functions: GetLetterTemplate, GetLetterTemplates, UpdateCustomFields
GetLetterTemplate (get details on a specific Letter template)
GetLetterTemplates (get a list of Letter Templates)
UpdateCustomFields (update Custom Fields)
These updates will be available in the next update, when your version timestamp is later than 4/27/2016 (version timestamp is located on home page of the admin page)