yet another set of bugfixes

Dependencies

• [2] ED4Z6ORC cleaner API for file-system access
• [3] VHQCNMAR several more modules
• [4] AD34IX2Z couple more tests
• [5] PX3736DX better error message
• [6] SPNMXTYR have file API operate on state object
• [7] KKMFQDR4 editing source code from within the app
• [8] OI4FPFIN support drawings in the source editor

Change contents

• replacement in source_file.lua at line 48
  [2.232]→[3.151396:151421](∅→∅),[3.151396]→[3.151396:151421](∅→∅)
  − if outfile == nil then
  [2.232]

  [3.151421]
  + if not outfile then
• replacement in file.lua at line 40
  [3.323]→[3.14:39](∅→∅),[3.2239]→[3.14:39](∅→∅)
  − if outfile == nil then
  [3.323]

  [3.324]
  + if not outfile then