Merge text0

Dependencies

• [2] NILDKUJV Merge text0
• [3] HOWVSTWA a few more testable file-system operations
• [4] ORRSP7FV deduce test names on failures
• [5] JCRUUD2S Merge text.love
• [6] HKV72RZV bugfix: save modified files in save directory
• [7] ED4Z6ORC cleaner API for file-system access
• [*] 3QNOKBFM beginnings of a test harness

Change contents

• edit in app.lua at line 93
  [2.580]

  [2.580]
  + App.mkdir = nativefs.createDirectory

  + App.remove = nativefs.remove
• edit in app.lua at line 502
  [4.16535]→[3.258:328](∅→∅),[4.16535]→[3.258:328](∅→∅)
  − App.mkdir = nativefs.createDirectory

  − App.remove = nativefs.remove