Delete dev_notes.txt
Delete dev_notes.txt

This file was used briefly to justify various design decisions, but it was never maintained.
Igor-Rast/printipi,Wallacoloo/printipi,Igor-Rast/printipi,Igor-Rast/printipi,Wallacoloo/printipi,harry159821/printipi,harry159821/printipi,Igor-Rast/printipi,harry159821/printipi,Wallacoloo/printipi,harry159821/printipi,Wallacoloo/printipi