The addon adds easy access buttons for guild professions next to the guild frame, so you don't have to change the roster view and scroll down to find the right professions.
* Removed .toc dependency for Blizzard_GuildUI, and trigger on ADDON_LOADED instead
* Added tooltips for the buttons, to show who in the guild has that professions (limited to Grand Master and Illustrious Grand Master)
* For Alchemy, show who's potion, elixir and transmutation master
* For Engineering, show who's Goblin and Gnomish
* On the tooltips, online people are shown in white, offline are shown in grey