Update CHANGELOG to v2.5.0
Update CHANGELOG to v2.5.0

Xarthisius/girder,Kitware/girder,RafaelPalomar/girder,data-exp-lab/girder,Xarthisius/girder,data-exp-lab/girder,RafaelPalomar/girder,RafaelPalomar/girder,girder/girder,Kitware/girder,kotfic/girder,jbeezley/girder,girder/girder,data-exp-lab/girder,kotfic/girder,kotfic/girder,jbeezley/girder,Xarthisius/girder,kotfic/girder,kotfic/girder,manthey/girder,data-exp-lab/girder,jbeezley/girder,jbeezley/girder,girder/girder,RafaelPalomar/girder,manthey/girder,Kitware/girder,manthey/girder,girder/girder,Xarthisius/girder,Xarthisius/girder,RafaelPalomar/girder,data-exp-lab/girder,manthey/girder,Kitware/girder