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

• 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.