Segment layering & effect blending improvements

- Photoshop-style segment/layer blending
- return of strip ABL
- remove global LED buffer in favour of segment-local buffer
- new effect blending modes/transitions
- custom palettes moved out of WS2812FX class
- increased limits (matrix size, LED RAM)
- added "rainbow"-mode colorwheel
- replaced palettes with gamma unmodified ones
- move gamma adjustment to last step before sending to LEDs
- Segment & WS2812FX class reorganisation (mutable members, reordered members, protected members)

usermods/Analog_Clock/Analog_Clock.cpp

@@ -102,9 +102,9 @@ private:
     void secondsEffectSineFade(int16_t secondLed, Toki::Time const& time) {
         uint32_t ms = time.ms % 1000;
         uint8_t b0 = (cos8_t(ms * 64 / 1000) - 128) * 2;
-        setPixelColor(secondLed, gamma32(scale32(secondColor, b0)));
+        setPixelColor(secondLed, scale32(secondColor, b0));
         uint8_t b1 = (sin8_t(ms * 64 / 1000) - 128) * 2;
-        setPixelColor(inc(secondLed, 1, secondsSegment), gamma32(scale32(secondColor, b1)));
+        setPixelColor(inc(secondLed, 1, secondsSegment), scale32(secondColor, b1));
     }
 
     static inline uint32_t qadd32(uint32_t c1, uint32_t c2) {
@@ -191,7 +191,7 @@ public:
             // for (uint16_t i = 1; i < secondsTrail + 1; ++i) {
             //     uint16_t trailLed = dec(secondLed, i, secondsSegment);
             //     uint8_t trailBright = 255 / (secondsTrail + 1) * (secondsTrail - i + 1);
-            //     setPixelColor(trailLed, gamma32(scale32(secondColor, trailBright)));
+            //     setPixelColor(trailLed, scale32(secondColor, trailBright));
             // }
         }
 

usermods/Cronixie/Cronixie.cpp

@@ -247,7 +247,7 @@ class UsermodCronixie : public Usermod {
         
         if (backlight && _digitOut[i] <11)
         {
-          uint32_t col = gamma32(strip.getSegment(0).colors[1]);
+          uint32_t col = strip.getSegment(0).colors[1];
           for (uint16_t j=o; j< o+10; j++) {
             if (j != excl) strip.setPixelColor(j, col);
           }