Added require "official/yield" to scripts that use dt.control.execute() so that they work correctly if you haven't required official/yield somewhere else.

official/enfuse.lua

@@ -33,6 +33,8 @@ TODO
 ]]
 
 local dt = require "darktable"
+require "official/yield"
+
 
 dt.configuration.check_version(...,{3,0,0})
 

official/generate_image_txt.lua

@@ -36,6 +36,8 @@ USAGE
 
 local dt = require "darktable"
 require "darktable.debug"
+require "official/yield"
+
 dt.configuration.check_version(...,{2,1,0},{3,0,0})
 
 dt.preferences.register("generate_image_txt",

official/selection_to_pdf.lua

@@ -34,6 +34,8 @@ Plugin allows you to choose how many thumbnails you need per row
 
 ]]
 local dt = require "darktable"
+require "official/yield"
+
 dt.configuration.check_version(...,{2,0,0},{3,0,0})
 
 dt.preferences.register