jimp Buffer problem / Updating jimp dependency

[m4rrc0]

Hi, I am trying lqip in a Gatsby js project but got bitten right from the start with the error referenced here.
Apparently the problem is only present with jimp v0.2.28 which lqip v2.1.0 is using.
When manually upgrading the dependency in my node module the error disappear but I obviously did not experiment further.

I will report back if I discover usage problems with jimp v0.3.2 but don't have time for a proper PR, sorry. =/