Kerfly 1.0.0

The first stable release: Kerfly is ready for everyday work with K40 lasers.

Kerfly 1.0 runs K40 lasers with Lihuiyu (M2 Nano family) boards on
Windows 10 / 11 (installer) and Linux (AppImage): drawing and node editing,
layers and a material library, pattern fills, living hinges, text on a path,
bridges, SVG, DXF, G-code and pictures, projects in one file, boundary trace,
simulation and job time, and a check that the head stays on the bed before
anything is sent.

Documentation

• README, installation guide, user guide and website describe only the two
  ready-made packages: the Windows installer (with the "Windows protected
  your PC" warning of an unsigned installer) and the Linux AppImage with the
  rule for the laser's USB port. Running from source, tests, translations
  and packaging moved to the new DEVELOPMENT.md, linked at the bottom.

Fixed

• Fill and Living hinge tools: clicking a shape that was already selected
  cut the hinge (or filled it), but the options bar kept showing "No hinge" /
  "No pattern"; it now shows what the shape got.

Downloads

• Windows 10 / 11: Kerfly-1.0.0-windows-setup.exe (installs Kerfly and, if you tick it, the K40 USB driver). Windows may warn about an unknown publisher: choose More info → Run anyway.
• Linux: Kerfly-1.0.0-x86_64.AppImage: make it executable and run it. Add the rule for the laser's USB port once, see INSTALL.md.

User guide: https://cyryllo.github.io/Kerfly/guide.html (Polish)