Release v2.4.1

Corresponds with PrusaSlicer 2.4.1 release, although there are no breaking changes and if you're happy with the 2.4.0 release of these configs, there is no need to upgrade.

Changes since v2.4.0.1:

• Reset absolute extrusion coordinate upon layer change through G92 command, even though this was eventually only enforced in PrusaSlicer for Marlin firmware. It certainly cannot hurt to also do it for Sailfish, better safe than sorry.
• Made retraction-improver script robust against G92 commands occurring mid-print.
• Minor tweaks to flexible and elastic filaments.

If you are upgrading from 2.3 or older, here is an important bit of the 2.4 release notes:

• Configuration has been separated from the make_fcp_x3g.pl script. You should no longer edit the script, only the config text file. See the README for updated instructions.
  A quick checklist for migrating your config lines from the old script to the new text file:
  • Convert single quotes to double quotes.
  • Omit commas in [ARRAY] type items. Put each array element between double quotes and separate elements with a space.
  • No trailing semicolons.