[RM] - optimized silkscreen

[RM] - removed vendor attributes from parts attributes were not updated and thus were misleading because auf wrong c&p values. So it's better to delete them completely (and perhaps add a dedicated BOM later)

[RM] - changed footprints from 1206 to 0805

Merge branch 'RM-switch-to-0805'

[RM] - removed thermals from buck converter polygons

[RM] - added readme

[RM] - pwr mlccs changed to 2 x 47uF and adj-voltage divider 1k6/470R - according to ROHM spec: switched to 2 x 47uF mlccs (instead of 1 x 22uF of the old design) - according to ROHM spec: adjusted voltage divider to get 3,3V output instead of (instead of 3,397V from the old design)

[RPi-HAT...] interactive BOM for v0.8, v0.9b, v0.9c

[RM] Routed pwr suply switch / base detection Merged olterions change with most recent verison Routed addtional parts for base detection and pwr supply switch Removed accidentially added v3.8.3

[RM] Addition of power supply switch The power supply has to be shut off before connecting the RM to the base plate. A few part are necessary to get this function on the board.