v2.01-rc1

Some bug fixes in this release which may help ULRS users or others who also use the USE_FLVSS_FAKE_SENSOR_DATA feature.
Issue fixed: users of the USE_FLVSS_FAKE_SENSOR_DATA feature would occasionally see a low Cmin value reported on the Taranis, and once the issue occurred it would remain throughout the flight. This was caused by the Teensy code continually checking the LiPo voltage to determine the cell count and occasional high voltage readings being incorrectly reported by the power brick which would cause the cell count to be considered higher than in reality, thus dividing total battery voltage by a higher cell count to report individual cell voltages as falsely low. Once the cell count was deemed higher, it would remain at this value. The code now allows the cell count to be determined just once and sticks with that value throughout the flight, thus when powered on the ground its less likely for there to be a power spike and the cell count to be determined correctly.