reduce player spawn tile clearing area
make sky rendering pass a debug option, enable by default
add sky day texture and shader and rendering stuff. blue everywhere!!
disable physics shape rendering by default now
calculate sun/moon position way more accurately, and use seconds
safety asserts in time..
fix time assumptions that restart at zero, to instead decrement 60

just for safety reasons, in case we ever skip a tick for some
reason or another, and don't land on 60 incremental boundaries.
re-add time tostring in debug statement
fix dusk/day setting a bit more. mix in the textures better
set start time @ 13:59 for ease of testing now, fix bad assert
blend day/dusk gradient cleanly.

enable shader debug area by default,
otherwise it will assert and no shader log
will be printed to tell errors..
render sky beneath tile renderer and everything