OptiFine 1.7.10_HD_U_B5
 - optimized chunk rendering, FPS +30% is possible
 - report OpenGL errors in chat
 - updated Forge compatibility
 - compatible with Forge #1291
 (30.01.2015)

OptiFine 1.7.10_HD_U_B4
 - various bugfixes
 - updated Forge compatibility
 - compatible with Forge #1240
 (19.12.2014)

OptiFine 1.7.10_HD_U_B1
 - fixed Forge compatibility
 - compatible with Forge #1240
 (05.12.2014)

OptiFine 1.7.10_HD_U_A4
 - fixed compatibility with Railcraft and IC2
 - compatible with Forge #1180
 (07.07.2014)