Are there any plans to support WoW Classic (v1.13.2)?

I get the following error with version 1.4 (TOC 11200), which worked for wow "vanilla" client 1.12:

Error occured in: Global
Count: 1
Message: ..\AddOns\Outfitter\Outfitter.lua line 563:
attempt to call global 'TEXT' (a nil value)
Debug:
[C]: TEXT()
Outfitter\Outfitter.lua:563: in main chunk
Locals:

That's this snippet from the Outfitter.lua:
StaticPopupDialogs["OUTFITTER_CONFIRM_DELETE"] =
{
text = TEXT(Outfitter_cConfirmDeleteMsg),
button1 = TEXT(DELETE),
button2 = TEXT(CANCEL),
OnAccept = function() Outfitter_DeleteSelectedOutfit(); end,
timeout = 0,
whileDead = 1,
hideOnEscape = 1
};

changing TEXT to loadstring results in this:

Error occured in: Global
Count: 1
Message: [string "OutfitterItem0OutfitMenu:OnLoad"] line 1:
attempt to index global 'this' (a nil value)
Debug:
[C]: ?
[string "*:OnLoad"]:1:
[string "*:OnLoad"]:1

This appears to be in the XML file. I have no experience with how addons are made, though - I'm just trying to interpret the syntax.

The Classic client is actually branched from the current retail one, so we're more likely to have luck running the current version than the old 1.12-compatible version. I haven't tried it yet, will do so soon.