Removing the progressbar member from the workspace

Dependencies

• [2] BNPSVXIC Friendlier progress bars
• [3] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).

Change contents

• replacement in Cargo.toml at line 2
  [3.1030201]→[2.11672:11734](∅→∅)
  − members = [ "pijul-macros", "pijul", "libpijul", "progress" ]
  [3.1030201]
  + members = [ "pijul-macros", "pijul", "libpijul" ]