Mirror cell connector in schematic to match with board

v0.3.3: Final version for BMS challenge with EnAccess Updates compared to v0.3.2: - Optimization of some copper planes - Net tie with thicker connection to GND - D12 connected to Bat- No parts were changed, the BOM is same as before.

All schematics on A4 and small fixes for BOM

v3.2.2: Switch to SMD terminals instead of press-fit Rationale: These are easier to manufacture (no additional step required) and the PCB can be mounted onto a heat sink without any milling required.

Remove FUSE_DETECT circuit Q13 was not properly tied to ground, so it was not switching on the voltage divider. A voltage divider that is continuously on would draw current even in deepsleep mode, so it is not viable for a BMS. I could not come up with an easy circuit that allows monitoring the voltage without any power consumption, so the fuse diagnosis mechanism is removed for now.

Board v0.3.1: Add test point for GPIO9 (BOOT) pin Fixes #34

BOM updates with a few more alternative parts

Major update for BMS C1 v0.3 This commit contains major updates of the PCB after the first prototype build-up and testing. Changes include: - Single PCB instead of stacked PCBs to simplify design and reduce cost. - STM32 MCU was removed due to supply shortage. Only ESP32-C3 supported. - Custom connectors replaced with off-the-shelf Würth Power Elements. - 5V power rail removed to simplify design (CAN runs on 3V3 transceiver). - Larger Shunt with improved footprint. - Optimized layout to reduce distance between IC and shunt.