Febe and firefox 54 multiprocess

[Ratuno]

Hi,with new version of firefox 54 with multiprocess,firefox cant work on it because FEBE is incompatible :/ , I guess I have to wait.. , i dont want disable FEBE

[cbaker_admin]

Yes, FEBE is apparently not compatible with the multi-process implementation. Since FEBE will stop working when Fx v57 is released, I will no longer be making any changes to the code.