Merge pull request #59 from DavidBruant/master

display shadows on startup (used to work only when hour was changed from...
Using graceful-fs
Merge pull request #60 from queenant/patch-1

Using graceful-fs
handling errors on writeFiles with retries
Merge pull request #61 from DavidBruant/more-robust-unzipCUBZip

handling errors on writeFiles with retries
untrack mrDoob files
only one requestAnimationFrame call
serverCommunication refactoring
fixed mouseMove call in FPS view
Merge pull request #63 from iOiurson/renderOptim

Render optim
call render after shadow
fixed bug of controls when changing address
added plane so that we don't see gaps in the ground
removed shadows on buildings, fixes #58
metadata are now in index.html and gzipped fixes #46
Merge pull request #64 from vallettea/small_fixes

Small fixes (Needs npm install and replay parsing scripts)
provide sun+ambient lights to SunPosition
compute and update light colors depending on sun vector
Merge pull request #65 from thibauts/master

Compute light colors depending on time of day / sun vector
added prod/dev support