Support Shadowform stance paging on BCC

Fixes #55

ActionBars.lua

@@ -30,6 +30,7 @@ local abdefaults = {
 				DRUID = { bear = 9, cat = 7, prowl = 8 },
 				ROGUE = { stealth = 7 },
 				WARRIOR = WoWClassic and { battle = 7, def = 8, berserker = 9 } or nil,
+				PRIEST = WoWClassic and { shadowform = 7 } or nil,
 			},
 		},
 		visibility = {

StateBar.lua

@@ -13,6 +13,7 @@ local table_insert, table_concat, fmt = table.insert, table.concat, string.forma
 -- GLOBALS: MainMenuBarArtFrame, OverrideActionBar, RegisterStateDriver, UnregisterStateDriver
 
 local WoWClassic = (WOW_PROJECT_ID ~= WOW_PROJECT_MAINLINE)
+local WoWBC = (WOW_PROJECT_ID == WOW_PROJECT_BURNING_CRUSADE_CLASSIC)
 
 local StateBar = setmetatable({}, {__index = ButtonBar})
 local StateBar_MT = {__index = StateBar}
@@ -105,6 +106,10 @@ DefaultStanceMap = setmetatable({}, { __index = function(t,k)
 			{ id = "def", name = GetSpellInfo(71), index = 2 },
 			{ id = "berserker", name = GetSpellInfo(2458), index = 3 },
 		}
+	elseif k == "PRIEST" and WoWBC then
+		newT = {
+			{ id = "shadowform", name = GetSpellInfo(15473), index = 1 },
+		}
 	end
 	rawset(t, k, newT)