It looks like I am compiling for 0.6.0
However, it looks like my Photon is running 0.6.3… I found the option to change the firmware target, but if I select anything higher than 0.6.0, the compilation fails with this error:
In file included from lib/FastLED/src/led_sysdefs.h:16:0,
from lib/FastLED/src/FastLED.h:34,
from src/Lixie.h:7,
from src/Lixie.cpp:7:
lib/FastLED/src/led_sysdefs_arm_stm32.h:36:32: note: previous declaration as 'typedef volatile uint8_t RwReg'
typedef volatile uint8_t RwReg; /**< Read-Write 8-bit register (volatile unsigned int) */
^