Bump version.

ReFreezed · ReFreezed · commit 812c692ab551 · 2019-08-02T17:19:27.000+02:00
diff --git a/preprocess.lua b/preprocess.lua
@@ -122,7 +122,7 @@ setmetatable(_G, {__newindex=function(_G, k, v)
 end})
 --]]
 
-local VERSION = "1.8.0"
+local VERSION = "1.9.0"
 
 local KEYWORDS = {
 	"and","break","do","else","elseif","end","false","for","function","if","in",
