OptiFine 1.10_HD_U_B6
 - fixed PureBDCraft saplings in GUI, removed hack for plants, resource packs should use "symmetry=all" for flowers 
 - fixed water block color from below
 - fixed chunk loading race condition
 - fixed exp orbs flashing
 - fixed connected textures for glass panes to affect only sides (keep top and bottom textures)
 - fixed VSync to be loaded correctly
 - ported OptiFine B6 for 1.9.4 to 1.10  
 (14.06.2016)