update perseus renderer version to 0.6.14
update perseus renderer version to 0.6.14

DXCanas/kolibri,learningequality/kolibri,DXCanas/kolibri,indirectlylit/kolibri,MingDai/kolibri,jonboiser/kolibri,lyw07/kolibri,DXCanas/kolibri,christianmemije/kolibri,mrpau/kolibri,lyw07/kolibri,benjaoming/kolibri,christianmemije/kolibri,benjaoming/kolibri,benjaoming/kolibri,mrpau/kolibri,christianmemije/kolibri,jonboiser/kolibri,indirectlylit/kolibri,MingDai/kolibri,indirectlylit/kolibri,learningequality/kolibri,mrpau/kolibri,jonboiser/kolibri,mrpau/kolibri,MingDai/kolibri,benjaoming/kolibri,christianmemije/kolibri,lyw07/kolibri,MingDai/kolibri,learningequality/kolibri,DXCanas/kolibri,indirectlylit/kolibri,lyw07/kolibri,jonboiser/kolibri,learningequality/kolibri