What's new in 0.6.6 — Elsewhere Steam update #4127101

* Fixed mobs being lit up wrong at the edge of the render distance * Fixed banner textures + Added banners for Czech Republic and New Zealand * Adjusted skin template to show where hands are * Fixed potential memory leak in multiplayer * GC optimisations * Massive memory optimisations + Press F7 to show debug info * Removed machine_type property from skulls (there are thousands of skulls in caves, so making them static objects is a significant performance boost) * Fixed tesseracts moving items through electric cables * Reworked a bunch of data structures to increase performance and decrease memory use. Hopefully this didn't completely break everything * Word conversions are much faster * Oak leaves make oak galls when pulverised