Prevent the loss of LS-FT during B4B

Delay B4B by one GCD if it comes up before Full Thrust to prevent the loss of a Life Surge Full Thrust during its duration. I'm seeing a DPS increase of about 5 on same seed for a 4 minute run.
Merge pull request #10 from inemnitable/patch-5

Prevent the loss of LS-FT during B4B