Revision history for Physics-Etch

0.02  2026-08-25
    - Expanded perldoc in Physics::Etch with full usage, physics, examples,
      and a detailed section on extending the material and recipe database.
    - Version bump to 0.02.

0.01  2026-08-18
    - Initial release of Physics::Etch and related model/toolkit modules.
    - Added CPAN distribution scaffolding (Makefile.PL, metadata, manifest).