msvc2013 build; multiplayer working on win32; glew included
Merge remote-tracking branch 'upstream/master'
follow picture-in-picture
follow fix
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into follow

Conflicts:
	main.c
initial try for player interpolation
don't render self
Merge branch 'master' into interpolate
interpolation tweaks
interpolation tweaks
client_position / interpolation
Merge branch 'master' into follow

Conflicts:
	main.c
observe mode
observe fixes
observe fix
more attrib members for all program uniforms, etc.
major refactoring
delete_chunks
updated README.md