Changelog for BuildCraft 6.4.5

Bugfixes:

• [#2585] Dupe bug with Thermal Expansion (asie)
• [#2582] Laser rendering not working properly with solid blocks on front (davboecki)
• (Fix attempt) [#2584] Filler lag when out of blocks (asie)
• Massive FPS lag with filler/builder effects (asie)