OptiFine 1.11_HD_U_B6
 - added fix for MC-98707
 - fixed crash with Railcraft and AA/AF enabled 
 - fixed NPE in shaders when renderViewEntity is NULL
 - fixed transparent hand with shaders when the world border is visible
 - fixed CEM animation operator "%"
 - added CEM for donkey, mule, skeleton_horse and zombie_horse
 - fixed CEM for ender crystal
 - added Custom Sky option "weather=clear|rain|thunder"
 - fixed cloud color transitions
 - fixed Custom Sky not visible for Render Distance below 8 chunks
 - added support for animated normal and specular textures
 - added shaders uniforms "frameCounter" and "frameTime" 
 - added shaders option to skip framebuffer texture clear
 - fixed fog affecting the debug renderer
 - fixed CEM models glowing with shaders (spider, enderman, dragon)
 - compatible with Forge #2199
(12.01.2017)
OptiFine 1.11_HD_U_B5
 - fixed "nbsp" character to render as space
 - compatible with Forge #2198
(22.12.2016)
OptiFine 1.11_HD_U_B4
 - fixed shaders bug: centerDepthSmooth not working when gaux4 is active
 - fixed CEM custom texture overriding TileEntity destroy overlay 
 - fixed CEM model scale
 - fixed minecart CEM model
 - fixed render distance Extreme in The End
 - reorganized reflection support
 - compatible with Forge #2188
(19.12.2016)
OptiFine 1.11_HD_U_B3
 - added CEM models for evoker, evoker fangs, vex and vindicator 
 - fixed ambient sounds not playing (vanilla bug MC-91803)
 - added negative biome check ("biomes=!Biome1 Biome2 ..." - all biomes except the given ones)
 - fixed shaders using upPosition from previous frame
 - added block ID mapping for shaders
 - updated documentation
 - updated Custom Items to recognize enchantment names 
 - fixed CEM for ender dragon and enderman
 - updated shaders to use "gbuffers_armor_glint" for enchanted handheld and dropped items
 - fixed option Screenshot Size to keep the relative size of toolbar and menus
 - compatible with Forge #2188
(19.12.2016)
OptiFine 1.11_HD_U_B2
 - fixed crash when loading tile entities (flower pot) 
 - fixed option Screenshot Size to keep the relative size of toolbar and menus
 - added warning for non-lowercase resource files
 - fixed custom potion textures
 - fixed custom potion colors
 - added option Screenshot Size (1x to 4x)
 - fixed support for v2 resource packs
 - compatible with Forge #2157
(30.11.2016)
OptiFine 1.11_HD_U_B1
 - fixed invisible entities in multiplayer
 - fixed crash with ExtraUtilities2 (broken EnderLilly model)
 - updated entity handling to reflect the Forge rewrite of the entity registry
 - updated MCP mappings
 - reorganized options, moved Dynamic Lights and Dynamic FOV to Video Settings
 - updated to Minecraft 1.11
 - compatible with Forge #2157
(24.11.2016)