Changes

• Improved fluid simulation threading. Decreases CPU usage. Threading available on all operating systems. Simulation performance should remain unchanged.

Bugfixes

• Fixed a crash when importing blueprint strings with power switch wires.
• Fixed fluid mixing for fixed recipe assemblers. more
• Fixed "Not enough rails" message after successful track placement. more
• Fixed a crash when destroying entities during the on_pre_ghost_deconstructed event. more
• Fixed that trains with "logistics while moving" disabled would not deploy robots when switched into automatic mode while waiting at a station more

Use the automatic updater if you can (check experimental updates in other settings) or download full installation at http://www.factorio.com/download/experimental.