cosf/sinf changed to cos_t/sin_t. int_fast32_t and int_fast_16_t changed to int.

Removed holes on 31x31 and 32x32 grids.

Added small pinwheel size. Adjusts medium and large values.

avoids back to back duplicates within the same line

Changed method for drawing odd numbered rays.

* minor cleanup, moved prevRay into setPixelColor
* removed experimental code (too slow)
* comments cleanup

fixing holes that appeared during testing
* at 52x52 (big 296 -> 304)
* at 24x32 (medium 192 -> 208)
* at 12x16 (small 72 -> 82)

... there is still one hole at 14x16 ... well wtf

Jump distance for odd rays fixed. Removed holes on rectangular matrices.

* setPixelColor: ensure that 0/0 is used
* getPixelColor: accuracy improvements

unfortunately, "scrolling" audioreactive effects are still not working properly - they end after 1/4 of the circle. Could be due to limited resolution of getPixelColor.

Fixed getPixelColor.

reducing code duplication between sPC and gPC

there were still two holes in my 52x52 setup --> added "XL" size for bigger than 50x50 - achieves 18fps on 52x52