ConvertCAD 1.3.0

Added

• Updates that download only the files that changed. When a new version exists, a
  bar under the toolbar offers it: Update now downloads only the changed files (usually
  a few MB instead of 170 MB), checks each one, and puts them in place when you restart
  or close ConvertCAD. If anything goes wrong, every file is put back as it was. Windows,
  portable folder or installation for the current user; elsewhere the bar offers the full
  download. Users of 1.2.x download 1.3.0 once in full (their version cannot do this yet).
• Update check on by default, at most once a day at start-up (switch it off with
  Help > Check for updates automatically). Help > Check for updates… and the Updates
  button check at any time. Skip this version hides a version until the next one.
• Command line: --check-update, --update, --update-from <zip>.

Changed

• The program is packaged so that a code change touches only small files (our code as
  separate files, the library archives beside the programs), and builds are
  reproducible (identical files for identical code).
• Libraries: the releases are built with exact library versions
  (requirements-lock.txt, unchanged from 1.2.3) and a pinned Python; they change only
  for a security fix or a needed feature. Known vulnerabilities are checked on every
  change and every week.
• Privacy policy: the daily update check and the update download are listed.