commit 7a0db52ecbf5c0c45f1d96dc60f36223fc95bf28
Author: Lukas K <lu@0x83.eu>
Date:   Tue Aug 30 00:49:32 2022 +0200

    TreeWriter: set mtime/ctime to not too far in the past date
    
    closes #685
    
    apparently, OSH Park doesn't like files created in the 80s
    
    changelog: Bugfixes/Board Editor: Fabrication output: set modification
    time for improved compatibility with board manufacturers
