Reimplemented mission cache to use less memory

diff --git a/MissionCache.lua b/MissionCache.lua
index e69de29..b771bb2 100644
--- a/MissionCache.lua
+++ b/MissionCache.lua
@@ -0,0 +1,105 @@
+local me,ns=...
+local addon=ns.addon --#addon
+local holdEvents,releaseEvents=addon.holdEvents,addon.releaseEvents
+local xprint=ns.xprint
+local xdump=ns.xdump
+--upvalue
+local G=C_Garrison
+local GMF=GarrisonMissionFrame
+local GMFMissions=GarrisonMissionFrameMissions
+local type=type
+local select=select
+local pairs=pairs
+local tonumber=tonumber
+local tinser=tinsert
+local GARRISON_CURRENCY=GARRISON_CURRENCY
+local Mbase = GMF.MissionTab.MissionList
+-- self=Mbase
+--	C_Garrison.GetInProgressMissions(self.inProgressMissions);
+--	C_Garrison.GetAvailableMissions(self.availableMissions);
+local missionIndex={}
+local AddExtraData
+local function keyToIndex(key)
+	local idx=missionIndex[key]
+	if (idx and idx <= #Mbase.availableMissions) then
+		if Mbase.availableMissions[idx].missionID==key then
+			return idx
+		else
+			idx=nil
+		end
+	end
+	wipe(missionIndex)
+	for i=1,#Mbase.availableMissions do
+		missionIndex[Mbase.availableMissions[i].missionID]=i
+		if Mbase.availableMissions[i].missionID==key then
+			return i
+		end
+	end
+end
+function addon:GetMissionData(missionID,key)
+	local idx=keyToIndex(missionID)
+	xprint("Mission",missionID," is ",idx,"of",#Mbase.availableMissions)
+	local mission=Mbase.availableMissions[idx]
+	if (key==nil) then
+		return mission
+	end
+	if (type(mission[key])~='nil') then
+		return mission[key]
+	end
+	if (key=='rank') then
+		mission.rank=mission.level < 100 and mission.level or mission.iLevel
+		return mission.rank
+	elseif(key=='basePerc') then
+		mission.basePerc=select(4,G.GetPartyMissionInfo(missionID))
+		return mission.basePerc
+	else
+		AddExtraData(mission)
+		return mission[key]
+	end
+end
+function AddExtraData(mission)
+	local _
+	_,mission.xp,mission.type,mission.typeDesc,mission.typeIcon,mission.locPrefix,_,mission.enemies=G.GetMissionInfo(mission.missionID)
+	mission.rank=mission.level < 100 and mission.level or mission.iLevel
+	mission.xpBonus=0
+	mission.resources=0
+	mission.gold=0
+	mission.followerUpgrade=0
+	mission.itemLevel=0
+	for k,v in pairs(mission.rewards) do
+		if (v.followerXP) then mission.xpBonus=mission.xpBonus+v.followerXP end
+		if (v.currencyID and v.currencyID==GARRISON_CURRENCY) then mission.resources=v.quantity end
+		if (v.currencyID and v.currencyID==0) then mission.gold =mission.gold+v.quantity/10000 end
+		if (v.itemID) then
+			if (v.itemID~=120205) then
+				local itemName, itemLink, itemRarity, itemLevel, itemMinLevel, itemType, itemSubType, itemStackCount,itemEquipLoc, itemTexture, itemSellPrice = GetItemInfo(v.itemID)
+				if (itemName) then
+					if (itemLevel > 1 ) then
+						mission.itemLevel=itemLevel
+					else
+						mission.followerUpgrade=itemRarity
+					end
+				end
+			end
+		end
+	end
+	mission.totalXp=(tonumber(mission.xp) or 0) + (tonumber(mission.xpBonus) or 0)
+	mission.globalXp=mission.totalXp*mission.numFollowers
+	if (mission.resources==0 and mission.gold==0 and mission.itemLevel==0 and mission.followerUpgrade==0) then
+		mission.xpOnly=true
+	else
+		mission.xpOnly=false
+	end
+	mission.slots={}
+	local slots=mission.slots
+
+	for i=1,#mission.enemies do
+		local mechanics=mission.enemies[i].mechanics
+		for i,mechanic in pairs(mechanics) do
+			tinsert(slots,mechanic)
+		end
+	end
+	if (type) then
+		tinsert(slots,{name=TYPE,key=mission.type,icon=mission.typeIcon})
+	end
+end