Library (FastLED) suddenly causing errors in 'Verify'

[ScruffR]

@IneffableMF, others have noticed this too and Particle has already suggested a workaround here

Issues with 0.4.9 firmware [SOLVED]

Sadly, this is always a potential issue when we have everything in a global namespace. A quick fix is to add #undef SPI before including any headers which themselves define SPI.