Firmware-Talon-4.20 (pre-release)

EDIT: This file has been removed as it is deprecated by the official release of firmware version 4.22.
https://github.com/CrossTheRoadElec/Phoenix-Releases/releases/tag/Firmware-for-Phoenix-v5.14.1

This is a pre-release of Talon 4.20 firmware.

We strongly recommend instead using Phoenix 5.14.1 which has the official firmware that contains the final fix referenced in this pre-release.

This improves a limitation where **Motion Magic velocity curve** is **coarse** due to using a **low-resolution sensor**.
This was accomplished by increasing the arithmetic precision of the algorithm to better support smaller ranges in sensor values, typically seen with **ten-turn analog pots or low-PPR encoders**.

If you are using an older firmware release and you are not experiencing this limitation, then there is no need to update.  

Future formal Phoenix releases will pick up this or newer firmware, as part of the normal release cycle.

Thanks **FRC Team 3244 - Granite City Gearheads**, for providing the test conditions and confirming the fix.