LinTrain Code

Modified CDU turnout decoder hardware to use parts from the JLCPCB SMD stock

Updated the "light accessory" decoder design to use a more modern PIC in SMD

Updated optical detector design to use a more modern PIC
Ported code to the new device and a nicer build system

Small adjustments to the CDU turnout decoder hardware design.

Updated GUI scripts to Python 3

Created a new, standalone command station using an STM32 ARM CPU

Updated web page with new release info

Removed a bunch of inappropriate "executable" tags from non-trunk paths

Updated Python module to build against Python 3 (Python 2.7 still OK, too)

Updated kernel driver to build against kernel 5.6 and use PARPORT if available
Limited testing as my command station seems to have died...