some release notes

old-commit-hash: ab8a6352b0

RELEASES.md

@@ -5,6 +5,12 @@ Version 0.8.15 (2022-XX-XX)
   * Much smoother control, consistent across the speed range
   * Effective feedforward that uses road roll
   * Simplified tuning, all car-specific parameters can be derived from data
+  * Significantly improved control on TSS-P Prius
+* New driver monitoring model
+  * takes a larger input frame
+  * outputs a driver state for both driver and passenger
+  * automatically determines which side the driver is on (soon)
+* Reduced power usage: device runs cooler and fan spins less
 * AGNOS 5
 * Lexus NX Hybrid 2020 support thanks to AlexandreSato!