Version v0.05j "All it takes to stop the war in Ukraine is a phone ca…

…ll."

- Added two documentation files in /docs.
- Merged iannez pull request "Better use variables/constants". Thank you, excellent work!
- Added iannez as Collaborator at top of file comments.
- Preliminary work on adding EEPROM emulation in Flash to save operating parameters.
- Added "tab delimited data output" mode and commands to switch back and forth between formats.
- Removed (hopefully) all remaining code related to MCP4725 12-bit DAC.
- Better comments and code formatting.