Minor corrections and updates
- Added correct version text (v4.31) to silkscreen on top of PCB.
- Added + and - silkscreen text next to excitation LED.
- Slight modification to PCB outline around mounting screw holes to better match with Miniscope housing.
- Changed the added via diameter from 0.3mm to 0.35mm to be consistent with rest of vias.
- Updated Gerbers.