Updated change log for 0.5.4 release.
Updated change log for 0.5.4 release.

BlazesRus/niflib,niftools/niflib,niftools/niflib,neomonkeus/niflib,figment/niflib,figment/niflib,niftools/niflib,figment/niflib,BlazesRus/niflib,amorilia/niflib,neomonkeus/niflib,amorilia/niflib,neomonkeus/niflib