updated change log
updated change log

HumanBrainProject/hbp-collaboratory-sphinx-theme,HumanBrainProject/hbp-sphinx-theme,HumanBrainProject/hbp-collaboratory-sphinx-theme,HumanBrainProject/hbp-sphinx-theme,HumanBrainProject/hbp-collaboratory-sphinx-theme,HumanBrainProject/hbp-sphinx-theme